around 11pm my friend went to a supermarket to buy foods and other household necessity by himself.knowing that the supermarket is just 10 minutes walking distance,so he walked alone. as he nearly came to the supermarket he notice this land cruiser car and by the time he take a short look on that car, the car went unto him then says hi, come here in the car. but my friend declined his offer. a few more minutes this person keeps on bragging my friend to come. knowing his a boy what would be that person be up to? the more my friend says NO.the more this person keep on asking my friend to come. and this is the worst part, when my friend actually crosses the street he intentionally bump and yells at him in a mad tone. He says he's A CID and he will call the police.by that time my friend was shocked and buggled. the person then grabbed the right arm twisting it of course my friend fights back. my friend received a slap and his right jaw was hit by 3 fingers only and got punched by his right upper chest..then my friend ran and hid somewhere in the building.and the person still roving to that area searching for him..30 minutes later he saw a police and terribly shocked when he saw this person and the police talking. terrified, he rush into our house crying and didnt speak for 2 hours..till now he is just lying on his bed and is wide awake and we dont know whats going on to his mind at this very moment... where could we seek help? what would be the best thing to do.