At least 59 deaths—including the deaths of 15 children—have now been confirmed in the central Texas flash floods, according to the latest update from officials, though dozens of children from a summer camp remain unaccounted for as blame swirls over preparedness and whether residents were properly alerted.

Eleven girls from a summer camp along the Guadalupe River in the Texas Hill Country are among those unaccounted for. Forecasters warned of more rain and possible flash flooding in hard-hit areas on Sunday.

Deadly flooding is responsible for the deaths of at least 68 people in Kerr County and 10 others across the state, officials say.