JACKSONVILLE, Fla. – Jacksonville police are investigating after the body of a woman was found floating in the St. Johns River late Sunday morning.

Witnesses told News4Jax that the body was found about 10:45 a.m. in the water near the Jacksonville Landing downtown.

Pat Ayers said he was boating along the river when he spotted the body.

"I was riding on my Jon boat. I came up by the Landing. As I came up by the Landing, I saw something brown floating. I thought it was a piece of wood so I passed by it. Another Jon boat was right beside me and he hollered, 'It's a body.' I turned around and got to the body and got my pole, and I reached in and got her shirt, held onto her and walked her to the front of my boat. The other guy got in and idled my boat up to shore. We tied my boat up, pulled her out of the water," Ayers said.

The Jacksonville Sheriff's Office was then called to investigate the death.

"They told me it was possible boyfriend, girlfriend on the Southbank arguing and she might have jumped in," Ayers said.

Ayers said the other boaters who helped him get the woman out of the river were shaken up.

"The couple that found her, his wife was pretty upset over it. Nobody likes to see this," Ayers said.

The body has not yet been identified.