Chicago police released three photos of a man wanted for gunning down two former co-workers Tuesday on Navy Pier.

Police have released surveillance images of the man suspected of killing two former co-workers at Navy Pier earlier this week ...

The Chicago police arrested him Oct. 11 on the warrant ... McMillian was sentenced to four years in prison in the shooting ...

Sidi Mohamed Abdallahi, a 22-year-old Mauritanian national, has been charged with terrorism, hate crime and attempted murder ...