At least three people died and two others were seriously injured in a road mishap here on Wednesday. Motorways police said that an over speeding vehicle skidded off road after driver suddenly applied brakes and it got out control and fell down at under construction portion of Lyari Expressway in Karachi. Five people were seriously injured in the accident who were shifted to hospital where three of them succumbed to their wounds while condition of the other injured people was also stated to be critical.