FBI investigates video claiming responsibility for possible explosive device at MacDill Air Force Base

The FBI is investigating whether a video claiming responsibility for a possible explosive device left at MacDill Air Force Base in Florida last week is credible, according to law enforcement sources.

The video, sent to the Tampa Bay Times via the app Signal, warns about more possible bombs. It also includes a timeline for a series of threats targeting the base last week, including the suspicious package discovered on March 16 and another threat that led to a lockdown at the base later in the week, according to the paper’s reporting.

According to the newspaper, the person talking in the video is in silhouette and appears to be speaking in an altered voice. The person in the video claimed to be affiliated with a group that is against the war in Iran and U.S. deportation policy.

The person in the video also claimed another bomb was reportedly planted at the base on March 10, the newspaper reported. The person in the video said it did not detonate but claimed that any design flaws had been corrected.

Read more: ABC News