At least 24 people are dead after heavy rain lashed Texas, leading to "catastrophic" flooding.Texas Gov. Greg Abbott said emergency responders remained in a search and rescue posture, hours after the flooding along the Guadalupe River inundated nearby areas.

Authorities have said thirteen people have died in Kerr County in the US state of Texas amid a bout of severe weather and flooding. Others remain unaccounted for - including around 20 children who had been at a summer camp.

Authorities stressed that the situation was still developing and that the death toll could change, with rescue operations ongoing.