A Pakistani official says the death toll from flash floods in the country's northwest has risen to at least 274 after rescuers recovered dozens of bodies from the rubble of collapsed houses.

Officials say rescuers have recovered dozens more bodies from collapsed homes in a northwestern district of Pakistan, bringing the death toll to at least 274, as authorities defended their response to the flooding.

The country has endured heavier rain during monsoon seasons, which scientists have attributed to climate change. The authorities said that at least 194 people died on Friday.