An alleged bank robber involved in a bizarre incident late last week, in which he stabbed himself repeatedly just as he was about to be taken into custody, now faces a federal charge.

A federal arrest warrant was issued Monday for William Duffy, 51, on one count of bank robbery.

On July 11, Duffy, from Melbal, Idaho, allegedly robbed a Zions Bank, 5 N. Main in Bountiful, getting away with about $2,600, according to court documents. He waited in line with other customers and then handed the teller a note demanding money once he reached the counter, court documents stated.

An employee followed Duffy out of the bank while dialing 911. There happened to be an officer just a block away from the bank, according to court documents.

The responding officer spotted Duffy's Saab and pulled him over near 400 North and 500 West. As officers approached the vehicle, however, Duffy began to repeatedly stab himself in the chest with a knife. Officers were forced to use a Taser to get him to stop.

Duffy remained in a local hospital Monday. He will be taken into federal custody after his release from the hospital, according to the U.S. Attorney's Office.

If convicted, he faces up to 20 years in federal prison.