A landslide the size of a small town has killed at least 18 people and toppled 11 buildings in southwest China, state-run media said, citing local authorities.

The disaster occurred in Sichuan province’s Dujiangyan city on Wednesday, the Xinhua state news agency reported.

By Thursday afternoon, the number of people reported missing had climbed to 107, from 21 the previous day. Rescuers continue to dig through 53 million cubic feet of dirt in search of them.

Flooding that triggered the landslide has affected 1.5 million people and inundated tens of thousands of acres of crops. The torrents have plagued the mountainous region since Monday, smashing bridges and knocking out power to thousands.

They have washed away property worth more than $40 million, provincial officials said.

Xinhua also reported that more than 400 stranded people have been securely moved out of Dujiangyan.