Islamabad, Pakistan (CNN) -- A U.S. drone strike killed six suspected militants Sunday night in northwest Pakistan, two Pakistani intelligence officials told CNN.

The drone strike targeted an alleged militant hideout in a village in South Waziristan, one of seven districts in Pakistan's tribal region along the Afghan border, the officials said.

The attack was the first in a month in Pakistan, one of the longest stretches without a strike from the unmanned drones over the past two years.

It was also the first since an American official shot and killed two Pakistani men in Lahore on January 27, sparking a diplomatic face-off between Islamabad and Washington.

Journalist Nasir Dawar contributed to this report