A 13-foot (4-meter) alligator has reportedly attacked and killed a girl who was swimming in a Brazilian jungle river.

Firefighters tell local media that 11-year-old Gigliane do Nascimento Bira was playing with friends in shallow water in the northern state of Rondonia, in the Amazon region.

The Agencia Estado news service says the reptile was found about 300 feet (100 meters) from the site of Sunday afternoon's attack. Authorities shot it dead so her body could be recovered.

Calls to Rondonia authorities were not immediately answered Monday.