Amritsar Police have successfully dismantled a cross-border arms smuggling module, arresting five individuals and recovering a cache of sophisticated pistols and live cartridges.
But senior superintendent of police, operations, Lahore Syed Ali Raza told the Dawn newspaper that "Tamba is still alive but critically injured".
Tamba was attacked by motorcycle-borne assailants at his residence in Sanant Nagar, a thickly populated area of old Lahore in the afternoon.
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.
Sarabjit Singh (49) had died following an attack on him by the inmates of a Lahore prison in April 2013.
The incident occurred in Takkarpura village of Patti town on the intervening night of Tuesday and Wednesday, they said.
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.
The NIA on Wednesday took over the probe in the murder case of Shaurya Chakra awardee Balwinder Singh Sandhu, who was gunned down by two bike-borne men under a conspiracy by Pakistan-based Khalistani terrorists and ISI handlers, an official said.
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.
The ISYF is supported by Pakistan's intelligence agency ISI.
Angry protests broke out in Sarabjit Singh's native Bhikhiwind village after the Indian prisoner died in a Lahore hospital with villagers lashing out at Pakistani authorities for the deadly attack on him
Polling was held for over hundred civic bodies in Punjab on Sunday amid stray incidents of skirmishes at some places.
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 family was shocked to know that their advocate Rana Abdul Hamid, whom they had trusted like a messiah for Sarabjit's release, backstabbed them by "deliberately avoiding to appear" in the Supreme Court.
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.
The Punjab Police on Thursday arrested the second shooter involved in the killing of Shaurya Chakra awardee Balwinder Singh Sandhu last year.
When asked to stop, the intruders fired on BSF troops who retaliated in self-defence. Subsequently, five intruders were shot dead, a BSF officer said.
Several college girls performed a yagna (religious offering) on Thursday in Bhikhiwind village, next to the Pakistan border, to pray for the life of Sarabjit Singh, who is facing death sentence in the neighbouring country.
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.
The sister of slain Indian national Sarabjit Singh broke down and wept on Thursday as she received his belongings, including copies of Hanuman Chalisa and Quran, six months after he died following a brutal attack inside a Pakistani jail.