Witness to the murder

Last night when I was returning home, a murder took place in front of my eyes. When I got off the bus, I heard an argument. I walked around the corner of the building, and saw two guys. One had a gun in his hand. He put the gun to the other guy's head and fired. The guy fell and he shot at him one more time. I stood stiffly, and then I began to breathe hard. The killer turned and saw me. That's when I started running He didn't follow me, but he could see my face well. I'm afraid I can't leave the house.