At least 4 people have been killed while 15 others injured in rain-related incidents in Dera Ismail Khan (DIK) and Tank, a private TV reported on Thursday.
Basti Lar, Basti Ilyas and a new colony have been deluged after the RD-1200 canal flooded due to continued rains, sweeping away as many as 200 houses.
However, no official team managed to reach the site.
Heavy downpour continued in Dera Ismail Khan for the last 48 hours, while some 50 houses have been demolished in Tank.
Roads have been submerged in Tank Bannu, Tank Dera and South Waziristan.
On the other hand, a village located alongside the River Indus is likely to be deluged as water level rises in the river near DIK.