Three Pakistani Navy personnel were arrested for alleged involvement in an attack on a dockyard in Karachi, officials said on Friday.
Two militants were killed and four captured on Saturday after they tried to storm a key repair facility for warships.
The officials were arrested this week in Balochistan when they were trying to escape to neighbouring Afghanistan, a security official said.
“They have already been moved to Karachi and were being quizzed by the experts,” he said.
Defence Minister Khawaja Asif told Parliament this week that the attack seemed to have been carried out partly by insiders.
Taliban militants already claimed responsibility but al-Qaeda said in an overnight message in Urdu that the attack was carried out by its new South Asia branch, set up by its chief Ayman al-Zawahiri last week.
Al-Qaeda said that its fighters were “tasked to take over a warship” and use its missile systems to target a US fleet.
