Austin police have arrested a man they believe was involved in a bank robbery which led to a SWAT situation Monday afternoon.

Martin Anthony Castillo, 18, was arrested Tuesday and federally charged with Bank Robbery.

Police told KVUE that a robbery was reported at the Capitol Credit Union at 133 East Ben White Boulevard near Slaughter Lane at 10:37 a.m.

Castillo reportedly entered the bank with an assault rifle and restrained bank employees and customers before leaving the bank in a black vehicle, according to police.

APD said the investigation led them to Griffis Southpark Apartments, located at 8515 South Interstate 35. The APD SWAT team and APD Robbery detectives secured the apartment complex and suspect vehicle. Three individuals were detained and questioned by police and the FBI. Their information led to Castillo's arrest.

After obtaining a warrant, police searched Castillo's apartment and vehicle. They found cash, clothing and a weapon believed to be used in the robbery.

The robbery remains under investigation. Anyone with information is asked to contact the Robbery tip line at 512-974-5092 or Crime Stoppers at 512-472-TIPS. You can also submit information with the Crime Stoppers app or APD's mobile app on iPhone or Android.