An unruly biker jumped a traffic signal in Borivli West on Wednesday night and grievously injured a traffic police constable. According to police sources, the injured constable, identified as Milind Hiwale, 32, from the Borivli traffic division, was regulating traffic at the Don Bosco junction in Borivli around 8.15 pm on Wednesday.

Just then, the biker, identified as Akshay Ajay Parmar, 20, jumped the signal. Hiwale signalled him to stop, but Parmar drove his motorcycle towards Hiwale and ran him over, leaving him with head, nose and leg injuries.