Pakistan investigates murder of suspect in 2013 fatal attack on Indian prisoner Sarabjit Singh

But Singh died in 2013 after inmates attacked him in a Lahore prison. His fate inflamed tensions between the two South Asian nuclear-armed rivals.

Tamba was accused of being involved in Singh’s death but was not convicted.

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The deputy inspector general of police in Lahore, Ali Nasir Rizvi, said gunmen entered Tamba’s house and shot him. They fled the scene on a motorbike. Officials from Pakistan’s army and intelligence agency reached the site and removed Tamba’s body, taking it to the city’s Combined Military Hospital.

Rizvi said a case had been lodged against unidentified assailants but gave no further information about the case, including a possible motive for the attack.

There was scant coverage of Tamba’s death in Pakistan’s media. However, Indian outlets were quick to report on the shooting. There was no immediate comment from the Indian authorities.

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Singh was arrested in 1990 for his role in a series of bombings in Lahore and Faisalabad that killed 14 people. His family said he was innocent.

Last year, both the United States and Canada accused Indian agents of links to assassination plots on their soil. India dismissed the allegation of its involvement in the killing in Canada as “absurd”.

In the case involving the US, India’s foreign ministry said it had set up a high-level committee to investigate the accusations, adding that the alleged link to an Indian official was “a matter of concern” and “against government policy”.