A 17-year-old girl whose body was found in an Alabama creek had been beaten and stabbed, police wrote in arrest warrants for three 16-year-old girls accused of capital murder.

An affidavit submitted with arrest warrants said Lesley Luna Pantaleon died after being stabbed with a knife and attacked with a metal pole during a robbery.

Pantaleon was last seen alive in June. Her body was found in water near the city’s airport on July 4, police said.

Montgomery police said Ta’Niya Merriweather, Erin Taylor and Tyeshia Whisenant were charged with murder during a robbery, court documents showed. Court records show that the three were charged as adults.

Pantaleon’s parents reported her missing on June 24, when she was last seen driving a vehicle in Montgomery.

The three suspects had an initial court appearance Wednesday.