(WPXI) – Flames ripped through a popular Irish Pub in Carnegie Thursday afternoon. Allegheny County dispatchers say police officers, firefighters and medics were called to 215 E Main Street, at 1:11 p.m. on Thursday. Authorities say when they arrived Riley’s Pour House was engulfed by flames. Half of the business has completely burned down. As of 1:40 p.m., the emergency crews had raised the fire response to four alarms. The fire has spread to neighboring businesses. There are no reported injuries at this time and the cause of the fire has not been released.