Ndiaga Diagne, a Senegalese immigrant-turned US citizen, was not on the radar of local police or the FBI before Sunday’s attack. Now, his personal life, criminal history and private affiliations are under extreme scrutiny as investigators dissect his motive.

New doorbell camera footage has been obtained showing the suspect in the Austin mass shooting leaving his apartment.

Austin bar shooting suspect had Iranian flag, pictures of Iranian leaders in his apartment as FBI investigates potential terrorism nexus in deadly attack, police and sources said.

Diagne had a history of arrests in Texas and is believed to have lived in New York City between 2000 and 2008.

Federal and local authorities are investigating the Austin Sixth Street shooting that left four dead and 13 injured. Here's what we know Tuesday.

A fatal shooting at a bar in Austin, Texas, early Sunday morning has resulted in at least three deaths and 14 injuries, with an FBI agent saying Sunday there may be a connection to terrorism.

The Islamic radical who shot up an Austin bar had a history of spewing hateful messages online — including calling conservative women “wh–es” and praising the Islamic revolution as “eternal.” The unhinged social media posts apparently tied to Ndiaga Diagne surfaced after the 53-year-old Senegalese national was killed by cops on Sunday after he embarked on a murderous rampage that left three people dead and wounded more than a dozen.

Ndiaga Diagne posted messages praising an "eternal" Islamic revolution and mocking Donald Trump before killing two and wounding 14 in Texas.