An Irondale man was arrested by law enforcement on Wednesday in connection to an explosive device that detonated outside the Alabama Attorney General's office in late February.

Kyle Benjamin Douglas Calvert, 26, was charged with aggravated use of explosives and possession of an unregistered destructive device.

“Thanks to the combined efforts of the FBI and state and local law enforcement, this defendant has been held accountable for detonating an explosive device outside the Alabama Attorney General's office,” said U.S. Attorney General Merrick B. Garland. “The Department of Justice will never tolerate acts of violence targeted at public servants.”

Alabama Attorney General Steve Marshall thanked law enforcement and promised to provide additional information about the explosion.

“My staff and I are breathing a sigh of relief this morning knowing that this individual has been taken off the street,” Marshall said. “More information will be released in the coming weeks, but it's safe to say this was not a random act of violence.”

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“We are grateful to our federal and local partners for their assistance in this case and are pleased that the perpetrator will receive a lengthy prison sentence for the federal charges.”

Acting U.S. Attorney Jonathan S. Ross expressed gratitude to the coalition forces that made the arrests possible.

“Federal, state and local law enforcement agencies have worked tirelessly to investigate this case,” Ross said. “Today's arrest reflects how close cooperation between law enforcement agencies furthers the pursuit of justice.”

“We appreciate the efforts of everyone involved.”

Calvert is scheduled to make his initial appearance in Montgomery federal court today at 1:30 p.m.

If convicted, he faces up to 20 years in prison and a fine for malicious damage with explosives and up to 10 years in prison and a $10,000 fine for possession of an unregistered destructive device.

The FBI Mobile Field Office, Montgomery Field Office, the Alabama Department of Law Enforcement and the Alabama Attorney General's Office investigated the case.

Austin Shipley is a staff writer for Yellow Hammer News.