LAHORE       -     Unidentified motorcyclists killed a murder suspect on the doorstep of his house in Millat Park police precincts on Thursday.  Police sources said 27-year-old Waqas Shaukat was facing murder charges. He was returning home after appearing in a court when he came under attack. The victim sustained multiple bullet wounds and died on the spot. The deceased was the son of police sub-inspector Shaukat. Heavy police and forensic experts reached the spot and started investigation.An official said the killing could be an outcome of old enmity.