There’s no such thing as an easy bust of a serial bank robber, FBI agents would say. Still some careless suspects certainly are simpler to snare than others.

Consider the willful self-incrimination by Jules Bahler, 21, that’s described in a complaint filed Friday in U.S. District Court in Detroit, according to Detroit News coverage.

He’s accused of bank robberies in Pontiac on Feb. 26 and March 4, and one March 5 in Bay City, 90 miles north. The same day as that last stickup, the complaint says, Bahler posted the above photo and others on his Facebook page – including one of his newly purchased Pontiac house.

That’s where he was arrested Friday by members of the FBI-Oakland County Violent Gang Task Force. A sheriff’s sergeant reported the Facebook shots of Bahler with what appeared to be the weapon and clothes seen in security videos from the banks. That black submachine gun was in a duffel bag at his feet during Friday’s vehicle stop, the criminal complaint says.

Bahler reportedly confessed, the newspaper says.

One of his savvier Facebook buddies, using the screen name King Machete, tried to warn Bahler he was foolhardy, the Deadline Detroit news site notices Saturday.

“U tripping brotha. I wouldn’t show that shit off like that,” the friend comments under his March 5 gun poses. “Cops be watching this shit brotha.”

Two days later, flashing lights and handcuffs confirmed that observation.