A volunteer paramedic in West, Texas, has been arrested for possession of an explosive device, but federal law enforcement officials said it’s too soon to say if there’s a connection to the explosion at a fertilizer plant there last month.

Bryce Reed, 31, who had a high profile in the days after the April 17 disaster that is now the subject of a criminal probe, was arrested after a friend discovered he has explosives and notified the local sheriff, authorities said.

The case was transferred to federal court, where Reed appeared Friday.

After the explosion three weeks ago, Reed gave interviews about the response and also eulogized a victim, Cyrus Reed, at a public memorial.The cause of the explosion — which killed 14, injured 200 and damaged or destroyed scores of homes and businesses – has not been determined.