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TAMPA (CBSMiami) – A child has died after being thrown into a Tampa-area river.

According to police, a little girl has died after a woman believed to be her mother threw her into the Hillsborough River.

The four-year-old girl was taken to the hospital but pronounced dead soon after, authorities say.

Witnesses are telling police they saw 26-year-old Shakayla Denson walk partway into the river before tossing the girl in.

Divers found the girl unconscious and underwater about a half hour later.

Denson was found wandering not far from the scene.

She has been arrested and is facing multiple charges, including first degree murder.

The Columbus Drive Bridge is located in Northern Tampa, not far from the area known as Tampa Heights.