The report, submitted by SSP Rao Anwar said, that SHO Azam Mehsud, his brother and accomplices were involved and that he had unspecified "evidence" showing that the officer and two of his brothers were involved in the blast on Thursday that killed four people.

The Pakistani Taliban claimed responsibility for Thursday's attack against Khan, who has pledged to battle extremism in the city.

According to investigation officials, about 5 kilos of explosive material was used in the blast.

Funeral prayers of the blast victims, Lal Badshah was offered at Landhi while Adeel’s at Malir and Mohammad’s at Nazimabad.