KARACHI: Three youngsters died when an over speeding dumper knocked down a motorcycle here in the metropolis on Wednesday, police said. A motorcycle carrying three youth was hit by the reckless driven dumper in Manghopir area of Karachi. All three youngsters died on the spot in the accident and dumper driver escaped from the scene. The bodies were shifted to hospital for post-mortem. The police impounded the dumper and after registering a case against the driver at large started raids for his arrest.—INP