A Fort Worth man was arrested Thursday after he allegedly called an FBI agent earlier this week and left messages threatening to kill the agent and his family due to the agent’s involvement in the Hunter Biden laptop investigation, according to a news release from the U.S. Department of Justice.

Timothy Muller, 43, was arrested outside his home without incident and charged with interstate threatening communications and influencing, impeding or retaliating against a federal official. According to federal court documents, Muller allegedly placed a call to the Baltimore-based FBI agent around 5 p.m. Tuesday.

The release said the agent participated in the investigation into a laptop belonging to “H.B.” and said Muller placed the call shortly after news outlets reported “H.B.’s” conviction on federal gun charges.