KARACHI: A preliminary report of last week's attack on the naval dockyard in Karachi has revealed the involvement of the Tehreek-i-Taliban Pakistan's (TTP) Sindh chapter in the attack, DawnNews reported.

The report said the TTP's Sindh chapter had penetrated into various departments of the provincial government.

The attackers intended to destroy the navy workshop and other key installations in the vicinity, according to the probe report which added that timely action by the Naval commandos had foiled the attempted terror attack.

The report also said that 21 suspects, including 14 servicemen, were also taken into custody. Three government employees were arrested from Larkana district and two from Jamshoro district of Sindh.

Moreover, three armed forces personnel including a Navy officer were earlier arrested from Quetta. During questioning, the detained suspects revealed that all involved persons had planned to escape to Afghanistan after conducting the attack.

Militants had attempted a terrorist attack on the Pakistan Naval Dockyard on Sept 6 which was thwarted. One sailor and two attackers were killed, while four were captured alive.

Earlier, the Tehreek-i-Taliban Pakistan (TTP) had claimed responsibility for the attack on the naval dockyard, claiming they had inside help.

Also read: Taliban claim attack on Karachi navy dockyard

Meanwhile, Defence Minister Khawaja Asif has on record said “some of the navy staff of commissioned ranks and some outsiders” were involved in the terrorist strike.

Also Read: Dockyard attack an inside job: minister

Correction: An earlier version of this article incorrectly quoted the report as saying that the 'Sindhi Taliban' was behind the dockyard attack. The report names the 'Taliban Sindh chapter'. The error is regretted.