The investigation is happening at a home in the 2000 block of Grand River in Richmond. Officials said it belongs to Houston Texans defensive end Antonio Smith.
According to the Fort Bend County Sheriff's Office, there was a party at Smith's house last night with about 100 guests. They had valet parking and neighbors said they could hear loud music.
Around 9:30 this morning, a man's body was found at the bottom of the pool.
The victim's name has not been released. Authorities said he was a 37-year-old man from the Katy area and was not a professional athlete.
About 25 people stayed at Smith's house after the party last night. They are being interviewed.
Officials said the victim was last seen alive around 2am.
No foul play is suspected, according to investigators.
We have a crew at the scene. Please stay with Eyewitness News and abc13.com for more information as it becomes available.