Fatal flash floods have struck another state in the south of the United States.

A man aged between 40 and 50, a four-year-old girl and a seven-year-old boy died after they were caught by the fast-flowing waters, according to the authorities in the mountain village of Ruidoso in New Mexico.

Videos on social media showed a mass of water rushing through the town and sweeping away an entire house.

The governor of New Mexico, Michelle Lujan Grisham, declared a state of emergency for the affected area in order to access emergency teams and federal funding.

“This crisis demands immediate action,” she wrote on Facebook.

In the neighbouring state of Texas, more than 100 people died, including many children from a summer camp, after flash floods on the Guadalupe river. More than 160 are still missing.