FULLERTON, Calif. (KTLA) -- The FBI says the alleged 'Triple Threat Bandit,' wanted in a series of Southland bank robberies, is in police custody.

Police arrested 40-year-old Joe Pettis of Anaheim after a high speed pursuit following a bank robbery in Fullerton.

Fullerton Police Sgt. Andrew Goodrich says Pettis is on federal probation for bank robbery.

According to the FBI, Pettis hit two banks Thursday morning -- a Farmer's Merchant Bank branch in Lakewood, and then an El Banco Popular in Fullerton.

According to Goodrich, Pettis entered the bank with a demand note that he presented to a teller.

The teller gave an undisclosed amount of cash to Pettis who left the bank, and got into a maroon Chevy Suburban.

The bank employees immediately called police who spotted the vehicle and gave chase.

Officers pursued the suspect onto the 91 freeway, approaching speeds of 100 mph, California Highway Patrol officer Ray Payton said.

Pursuing officers reported that the suspect began throwing money from the car as he crossed the Los Angeles County line and approached the 605 freeway.

The suspect eventually pulled over and was taken into custody without further incident.

The FBI says Pettis is the so-called 'Triple Threat Bandit' wanted for robbing 3 banks in 90-minutes in Orange County back in August.

The banks involved were the Orange County Credit Union on South Harbor Boulevard in Fullerton, then the Union Yes Federal Credit Union on West Chapman Avenue in Orange, then the U.S. Bank on Beach Boulevard in Buena Park, authorities say.

Goodrich says Pettis will be booked into the Santa Ana Jail, and is due to appear in Federal Court Friday morning in Santa Ana.