HYDERABAD(National times)- One person was killed and another sustained critical injuries in collision between two trailers in Hyderabad on late Wednesday night, Dunya News reported. According to details, the accident occurred near bypass where two trailers collided head-on due to over-speeding, as a result one person died on the spot and another sustained injuries. Police and rescue teams reached the spot and shifted the dead and injured to a nearby hospital. The road from Hyderabad to Karachi was also blocked for traffic after the accident. Meanwhile, police have registered a cased and started an investigation.