A paramedic linked to a recent “flash bang” grenade explosion in Magnolia, Texas is suspected of being involved in a similar incident that occurred in July. Gene Williams Jr., 42, head of the tactical medical squad for Cypress Creek EMS resigned from his position on unpaid reserve at the Hempstead Police Department the day after the incident occurred, officials said.

Huffman Assistant Fire Chief, Steven Cosby, 26 lost part of his foot when an explosive device went off near him, investigators said. Authorities said Williams was an agent for the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives in Beaumont six years ago.

Investigations are still underway by the Hempstead Police Department for his possible connection with the explosion of a “flash bang” grenade in a parking lot in late July. The case is pending with the city attorney.