Ram Das, an accused in the 2013 Muzaffarnagar riots, was found dead at his home in Kutba village, police said on Saturday.
Police officials said the body of Ram Das alias Kala (30) was recovered bearing a bullet injury and sent for a post-mortem examination.
Meanwhile, a probe is underway. Officials are probing whether Das committed suicide or was murdered.
Meanwhile, security was beefed up in and around the communally sensitive village where eight people had reportedly died and several left injured during the 2013 riots.
Extra police personnel were deployed as a precautionary measure to prevent any untoward incident, officials said.
The communal clashes in Muzaffarnagar and adjoining areas in August and September 2013 had claimed more than 60 lives while over 40,000 people were displaced.
(With PTI inputs)