An arrest warrant has been issued for Donovian Walker by the Hatfield Township Police Department.
Police are asking for the public's help to locate him.
Walker is charged with the April 22 armed robbery of the Lukoil gas station at 1900 N. Broad St. in the township.
While the suspect is known to frequent the Lansdale and Norristown areas, his current whereabouts are unknown.
Anyone with information should call the police department's detective division at 215-855-0903 or e-mail PoliceTips@hatfield-township.org.