DALLAS—A serial bank robber, who was on supervised release after serving a federal prison sentence for committing 18 bank robberies in Dallas in 2006, was sentenced today for committing four more bank robberies in 2013, announced U.S. Attorney Sarah R. Saldaña of the Northern District of Texas.

William Clark Perschman, 51, most recently of Addison, Texas, was sentenced by U.S. District Judge Jane J. Boyle to a total of 198 months in federal prison. Perschman admitted committing these bank robberies:

• July 17, 2013
  Woodforest National Bank
  3770 Belt Line Road, Addison
• August 3, 2013
  Capital One Bank
  3790 Belt Line Road, Addison
• August 14, 2013
  Green Bank
  16771 Dallas Parkway, Addison
• August 31, 2013
  Capital One Bank
  17561 Dallas Parkway, Dallas

In most of the bank robberies, Perschman wore a long-sleeved shirt and either a t-shirt or towel draped over his head to disguise his identity. In each robbery, he presented a demand note to a teller.

Perschman was released from federal custody in February 2011, after serving a 63-month federal prison sentence for robbing 18 banks in Dallas in 2006. He was serving a three-year term of supervised release that would have ended in February 2014.

The FBI, Addison Police Department and Dallas Police Department investigated. Assistant U.S. Attorney Keith Robinson prosecuted.