Three criminals escaped a Pakistani prison after breaking a window of the barrack where they were detained, media reports said.

Sajawal SSP Shehla Qureshi suspended the entire staff deployed on security and ordered an investigation into the jail-break, reported The Nation.

The escaped criminals were identified as Bilal, Sattar and Rafiq.

All three criminals were detained in barrack III of judicial sub-jail of Sajawal.

They were reportedly involved in dozens of cases of heinous crimes including robbery and kidnap for ransom.

Police have launched a manhunt to detain them.