In a news release late Thursday afternoon, Philadelphia police say the body is believed to be that of the teen who went missing on Wednesday evening.
The teen who went missing is 18-year-old William Wilkinson, from the Holmesburg section of Philadelphia.
He was out with three other friends just before 6:00 p.m. Wednesday when the accident happened.
"We were all out hanging out here and then Jennifer fell in and my cousin, Will, tried jumping in to help her and he started drowning," Joshua Garner said.
Joshua says he jumped in to save his cousin and yelled at two men standing nearby to try and save the girl, 18-year-old Jennifer Torres.
"They came and saved my life, but...," Jennifer said as she began to cry. "That's family right there."
Joshua says he tried desperately to save his cousin, but to no avail.
The search for Wilkinson continued on Thursday.