ATLANTA — The FBI is offering a reward of up to $20,000 for information that leads to the arrest of an unidentified male believed to be involved in an attempted arson at the Department of Homeland Security Immigration and Customs Enforcement (ICE) building in downtown Atlanta.

FBI officials say someone allegedly threw an incendiary device at the ICE field office on Ted Turner Drive around 8:14 p.m. on Tuesday. FBI officials say the suspect ran away after the incident.

Investigators are also gathering surveillance footage to help identify the person responsible. He was seen on surveillance footage wearing tan pants, a darked colored shirt, and glasses. He was also seen carrying what appeared to be a bag.

Atlanta police and FBI agents remained at the scene late into the evening, collecting and reviewing evidence as part of the ongoing investigation.

Several evidence markers were visible outside the facility as authorities examined the scene.

According to a statement from the FBI, there were no reported injuries or significant damage from the incident.

Investigators have not determined who or what was targeted in the incident.

Anyone with information about the suspect’s identity or whereabouts, or information that could assist investigators, is urged to contact Atlanta Crime Stoppers at 404-577-TIPS, call the FBI at 1-800-CALL-FBI, or submit a tip online at tips.fbi.gov.

The investigation remains ongoing.

This is a developing story. Stay with WSB Radio News for updates.

WSB Radio’s Graham Carroll and Ashley Simmons contributed to this story.