Punjab Deputy Chief Minister Sukhbir Singh Badal on Saturday accused the Congress of fomenting trouble in the state by encouraging secessionist forces.
Several people were feared trapped under the debris, police said, adding that the rescue operation was underway.
The Akali Dal-BJP alliance won on four seats and the AAP bagged one.
Congress has decided to re-nominate Union minister Manish Tewari from Ludhiana seat and his candidature will be announced soon.
Punjab Chief Minister Amarinder Singh on Friday announced job for a member of the family of each farmer from the state who died during the agitation against the Centre's new farm laws.
The three-time MLA from Phagwara served as a minister in the Cabinets including those of Beant Singh, Rajinder Kaur Bhattal and Amarinder Singh.
Mann made the claim while addressing a gathering after laying foundation stones for setting up tehsil complexes at Dirba and Cheema in Sangrur.
Rahul Gandhi had earlier talked to the MLAs over the phone ahead of the meeting of the AICC panel on Punjab.
The Aam Aadmi Party MLAs spent the night in the state legislative assembly building demanding copies of the Bill which the state's Congress government is now expected to introduce on Tuesday.
The chief minister said certain "leads" have been found which are being pursued aggressively and assured that culprits would soon be arrested. The chief minister has also announced a reward of Rs 50 lakh for anyone providing information on those involved in the blast.
The 48-year-old Mann was elected the AAP Legislature Party leader at a meeting of the party MLAs in Mohali on Friday.
With the Aam Aadmi Party looking set for a clean sweep in the Punjab assembly polls, its leader Raghav Chadha on Thursday said the party will emerge as the national and natural replacement of the Congress in the coming days.
Modi brought up the emotive issue of the gurdwara in Kartarpur Sahib, a place sacred to Sikhs as Guru Nanak Dev spent the last years of his life there, and blamed the Congress for country's partition, saying they did it for sake of power.
Expressing her anguish over the pain of farmers, Badal, leader of the ruling BJP's erstwhile ally, said, "It is strange that farmers are spending nights in open during the chilling winters and even then their demands are falling on deaf ears."
'Rahul Gandhi is on a 3,500 km-long march. For me, kilometers do not matter'
'If you put your own party into the witness box, like what Sidhu did, and treat them as wrongdoers, then how will the people of Punjab trust the party?'
This is a challenge India's political establishment will have to face unitedly, without looking for electoral benefit, warns Vir Sanghvi.
The Congress high command has so far maintained that the party will fight the February 20 elections to the 117-member assembly under a "collective leadership"
Channi also said the party is supreme and the government follows the party's ideology.
"I underwent a coronavirus test after developing symptoms and the report has come positive. I am getting hospitalised on the advice of doctors. I request all who have come in my contact in the past days to isolate themselves and get tested," Shekhwat tweeted in Hindi.
The incident occurred in Takkarpura village of Patti town on the intervening night of Tuesday and Wednesday, they said.
Making the announcement at a press conference in Chandigarh, Sidhu, however, said he will assume charge the day Punjab will get a new advocate general.
The crime scene presented a gory picture as blood had spread to other rooms.
The group of 23 leaders, who had written to Gandhi last year seeking an overhaul of the organisation, are also learnt to have objected to his joining the Congress as the matter was discussed among them at a meeting, the sources said.
Sidhu, who had been at loggerheads with Chief Minister Amarinder Singh, had stayed away from all Congress activities ever since he resigned as cabinet minister last year.
The Congress, however, said state chiefs are free to take their decisions within the party's norms and constitution.
Chief Minister Amarinder Singh suspended seven excise officials and six policemen, officials said.
Several Punjab Congress leaders, including Navjot Singh Sidhu, were on Thursday prevented from heading to Lakhimpur Kheri and were detained at a police station in Saharanpur in Uttar Pradesh.
The old alliance between the BJP and the SAD broke last year when the Shiromani Akali Dal quit the National Democratic Alliance over the farm laws.
Congress leader Navjot Singh Sidhu will meet senior party leaders Rahul Gandhi and Priyanka Gandhi Vadra in Delhi on June 29, sources in his office said.
Singh, a former Army officer, had been ill after a fall at his home in August 2014 and was admitted to the Army Research and Referral Hospital. He had been in and out of the hospital and was admitted again in June this year.
Kargil war hero and Vir Chakra awardee Satpal Singh works as a traffic constable in Punjab's Bhawanigarh town. He was a part of the Indian Army's Operation Vijay. He was an important figure in the Battle of Tiger Hill which took place between India and Pakistan during the Kargil war in 1999.
Some reports suggest that the Centre has empowered the BSF to conduct searches, arrest suspects and make seizures up to an area of 50 km inside the Indian territory from the international border.
Ruling Shiromani Akali Dal and Congress won one seat each in the bypolls to Patiala (urban) and Talwandi Sabo Assembly seats on Monday but the Aam Aadmi Party finished a poor third.
The resignation also signals a continuing saga of unaddressed concerns of young leaders, once considered close to former Congress president Rahul Gandhi.
Voting for 117 assembly seats in Punjab and 59 assembly constituencies spread across 16 districts of Uttar Pradesh were held on Sunday.
'People of my constituency told me they will continue loving me, but will not vote for me if I am with the BJP.'
ACP (North) Anil Kohli breathed his last at the SPS Hospital, Ludhiana, Civil Surgeon Rajesh Bagga said. On Friday, the Punjab government had given its go-ahead to the hospital to conduct plasma therapy on the police officer.
'The 10% increase in women voters was a determined bloc of voters.' 'They were willing to try this third party, specially because it seemed it had done something in Delhi.'