42 Pa.C.S. § 9162

The arrest of a person may be lawfully made by any peace officer or a private person without a warrant upon reasonable information that the accused stands charged in the courts of another county of this Commonwealth with a crime punishable by death or imprisonment for a term exceeding one year, but, when so arrested, the accused must be taken before a judge or issuing authority with all practicable speed, and complaint must be made against him under oath setting forth the ground for the arrest as in section 9161 (relating to arrest prior to requisition), and, thereafter, his answer shall be heard as if he had been arrested on a warrant.