Here’s what we know and don’t know about the thwarted potential terror attack in Michigan

FBI agents gather outside a home in Dearborn, Michigan, on Friday. Mike Householder/AP

A cryptic reference to “pumpkin day.” An online chat about an ISIS-inspired attack. A shooting range visit to practice high-speed reloads with AK-47s.

A potential terrorist attack over Halloween weekend was thwarted by the FBI, according to a social media post by agency Director Kash Patel.

Details of the alleged plot are scarce but two law enforcement sources with knowledge of the case told CNN about the “pumpkin day” reference, the online chat and the shooting range activity.

Here’s what we know and don’t know about the potential terror attack:

Two arrests, and others being questioned

Two people were arrested, and three others were being questioned, according to two law enforcement officials