A 36-year-old man, claiming to the brother of filmmaker Madhur Bhandarkar, was roughed up and allegedly robbed of valuables worth around Rs six lakh at knife point, police said.

Complainant Kalpesh Bhandarkar, a cameraman by profession, was returning in his car to his home in suburban Dahisar last night when four people chased him in another vehicle, intercepted him and dragged him out, they said.