The Pakistan Navy said the team investigating the PNS Mehran attack will present its report in a few days.
This was announced during a briefing to the media at the PNS Mehran base.
The navy spokesperson also gave details of equipment that was not damaged during the raid.
He said two Orion surveillance aircraft and several important helicopters had been taken to safer places immediately after the attack.
He also said it is premature to comment on the findings of the investigation team. He said the media must wait for the investigation report.
Charges added to initial FIR
Karachi Police added four additional charges in the FIR filed against the terrorists who attacked PNS Mehran.
SHO of Shahra-e-Faisal police station said three charges pertaining to illegal weapons and one about possessing illegal explosive material have been added to the FIR.
The fresh charges were added after police recovered weapons and explosive material from the terrorists killed in the operation.
Ten security personnel were killed and 21 injured during the attack at PNS Mehran Base on May 22.