SEATTLE — A Russian man recently arrested on bank fraud and other charges hacked into computers at restaurants in Western Washington, hundreds of other retail businesses, and even the Phoenix Zoo, U.S. authorities allege.

Roman Valerevich Seleznev appeared in court in Guam on Monday and was ordered detained until a hearing July 22. The 30-year-old Moscow man was arrested by the U.S. Secret Service over the weekend, according to documents filed in federal court in Seattle.

Seleznev, known by the underground name “Track2,” carried out a scheme to hack into retailers’ computers, install malicious software and steal credit card numbers from 2009 to 2011, according to an indictment unsealed Monday.

He is accused of marketing and selling those stolen credit card numbers on “criminally inspired websites” and using servers in Virginia, Russia, Ukraine and other parts of the world.