The attack was carried out at the directions of an intelligence agency of the neighbouring country, director general of police Gaurav Yadav said pointing to Pakistan.
Efforts are being made to nab the two criminals who shot at Sukhchain Singh, who recently returned from the US, and are on the run, they said.
'Go around and ask what Amritpal has done for the village and nearby areas.'
'Prime Minister Modi should sit with Trump and find a solution to this issue.'
Landa currently resides in Edmonton, the capital of Alberta in Canada, and is a member of Babbar Khalsa International.
The projectile, fired by some unidentified people, hit the Saanjh Kendra adjoining the Sarhali police station on the Amritsar-Bathinda highway on Friday night.
The incident occurred in Takkarpura village of Patti town on the intervening night of Tuesday and Wednesday, they said.
Mann also asked the vigilance bureau to investigate the wealth amassed by the police officer through alleged "drug money".
A bullet each hit Singh in the head and near the chest. Singh was rushed to a private hospital, police said. He is currently out of danger.
The curbs to be remained in Tarn Taran, Ferozepur, Moga, Sangrur and Amritsar's Ajnala sub-division and a few areas in Mohali till Thursday noon.
The Punjab Police has arrested five people in connection with the RPG attack at its Mohali office and pointed at the nexus of militant outfit Babbar Khalsa International and Pakistan's spy agency ISI.
The raids were conducted simultaneously from 6 am to 11am across several districts of the state on the directions of director general of police Punjab Gaurav Yadav.
In Punjab, farmers sat on railway tracks at many locations in 22 districts, including Amritsar, Ludhiana, Tarn Taran, Hoshiarpur, Firozpur, Fazilka, Sangrur, Mansa, Moga and Bathinda. Because of the disruption of train services, passengers experienced inconvenience.
Deputy Inspector General (Ferozepur Range) Hardial Singh Mann, in an official release, said the murder was the handiwork of some gangsters. Mann said they have arrested 11 persons for their alleged role in the crime. The accused are still being questioned to ascertain their motive behind killing Balwinder, he said.
A National Investigation Agency team, which reached the spot on Saturday evening, was also carrying out its investigation by visiting the spot, they said.
As soon as he head about Dalbir Kaur's death, Randeep Hooda, who played Sarabjit Singh in a 2016 biopic, immediately left Mumbai for Bhikhiwind, her native town in Tarn Taran district, to perform the last rituals, as he had promised her.
Earlier, the family had refused to cremate the body unless the accused were arrested, but then agreed to conduct the last rites after an assurance was given by the Tarn Taran district administration about prompt action in the case.
The Punjab police on Friday claimed to have busted an ISI-backed terror module jointly handled by Canada-based gangster Lakhbir Singh alias Landa and Pakistan-based gangster Harvinder Singh Rinda with the arrest of two of its operatives.
Sandhu had fought against terrorism in the state for years, facing at least 16 terror attacks during height of Khalistani militancy in Punjab but had been able to repudiate them all while fighting militants along with his brother and their wives.
In the first such incident reported in Punjab, drones were used to drop weapons and communication devices, among others, from across the border, an official said, adding that a half-burnt drone used in the operation was recovered from Tarn Taran.
So far, the maximum 83 deaths have taken place in Tarn Taran district, followed by 14 in Batala and 13 in Amritsar. The tragedy has been unfolding since Wednesday evening in the three districts.
In the first case, the arrested accused has been identified as Yograj Singh alias Yog, a resident of Rajoke village in Tarn Taran district.
The juvenile was also wanted in the murder of builder Sanjay Biyani on April 5 in Maharashtra's Nanded and the killing of gangster Rana Kandowalia outside a private hospital in Amritsar on August 4 last year,
Sarabjit Singh (49) had died following an attack on him by the inmates of a Lahore prison in April 2013.
They committed criminal trespass, injured officials, disrespected the Indian flag and damaged public property.
Farmers mounted their protest demanding a financial package for losses caused by the recent floods, a legal guarantee to minimum support price, and a sweeping debt waiver.
The National Investigation Agency has posted a list of gangsters and terrorists based in Canada.
Farmers on Saturday evening ended their three-day 'rail roko' stir that hit the movement of trains, causing inconvenience to passengers in Punjab and Haryana.
'I told them I am a Muslim, you are Sikh, you are Hindu, but we have one country to save.'
The Punjab Police on Thursday arrested the second shooter involved in the killing of Shaurya Chakra awardee Balwinder Singh Sandhu last year.
Union Agriculture and Farmer Welfare Minister Munda, Commerce and Industry Minister Piyush Goyal and Minister of State for Home Affairs Nityanand Rai represented the Centre at the meeting over the farmer unions' various demands, including a law guaranteeing a minimum support price (MSP) for crops. Punjab Chief Minister Bhagwant Mann also joined the meeting at the Mahatma Gandhi State Institute of Public Administration in Sector 26. The meeting started at around 8:45 pm on Thursday and lasted for around five hours.
Two gangsters, who were arrested in connection with singer Sidhu Moosewala murder case and lodged in the Goindwal Sahib Central Jail in Punjab's Tarn Taran district, were killed in a clash among inmates on Sunday, police said.
The operation took place at a time when Punjab, which shares 553 km of international border with Pakistan has been seeing a huge influx of consignments of heroin, arms and ammunition through drones and other means.
The victim was a farmer apparently taking part in the protest in the district's Longowal area, where police were trying to stop protesters from blocking a national highway and a toll plaza, officials said.
"Five grenades and two automatic pistols have been recovered from his possession. He is being brought to the national capital and his police custody remand will be sought," police said.
In a major crackdown on the nexus between gangsters, terrorist groups and drug smugglers based in foreign countries including Pakistan and Canada, the National Investigation Agency conducted raids at 76 locations across eight states on Tuesday and seized a large cache of arms and ammunition and cash to tune of Rs 1.5 crores.
This is the third straight day that the border-guarding force has shot down a drone in Punjab.
Dalbir Kaur had hit the headlines when she led a vociferous campaign for the release of her brother from the Pakistan jail, where he had been lodged since 1991 after being accused of being involved in a string of bomb blasts in that country's Punjab province.
Chief Minister Amarinder Singh suspended seven excise officials and six policemen, officials said.
The border guarding force has also started sensitising the residents along the border to immediately inform the police or BSF authorities if they spot anything unusual near the zero line.