KARACHI, Pakistan, April 9 —The Pakistani Government said today that “antinational elements” in the East Pakistani port of Chittagong had been “destroyed” and that many of them had surrendered to Pakistani troops.

The report, given in Pakistani Government newscasts, also said that life was becoming normal in Chittagong and in Dacca, where the martial‐law administrator, Lieut. Gen. Tikka Khan, was sworn in as Governor today and arms are reportedly being returned to civilians who had surrendered them.

“Infiltrators have been crushed with the help of the patriotic people,” of East Pakistan, an official spokesman said, denying Indian reports that East Pakistani dissidents had been winning victories.

The report about Chittagong was the first official acknowledgement here that there had been strife in the city.

He radio also reported that necessities of life, including poultry, eggs and meat, were now being brought into Chittagong and that many shops were open. “Work has started in the port and those who have left the city have started coming back,” it said.

In East Pakistan's main city, Dacca, the Government radio reported that civilians who had surrendered arms to military authorities after last month's crackdown on dissidents had been asked to take them back, The Government also reported that banks in Dacca were carrying on business as usual.