GARY — A Hammond man was robbed of a video game system in one of two robberies this week, police said.

A 24-year-old Hammond man told police about 9:30 p.m. Thursday that he had been robbed after agreeing to meet someone at a gas station at 19th Avenue and Harrison Street to sell his PlayStation 4 games, controllers and headphones.

When the man arrived at the gas station, the would-be buyer told him to proceed to a home on 19th Avenue, Lt. Dawn Westerfield said.

The man drove to the home and was met in the driveway by a man, who handed over what appeared to be a $100 bill in exchange for the game system.

When the Hammond man said, "That's not the money," the man pointed a firearm at him, police said. The Hammond man ran back to his car and fled.

Law enforcement agencies across Northwest Indiana have said anyone making an exchange with someone they don't know should use police parking lots.

On Tuesday, a deaf 65-year-old Michigan City man told police about 5:30 p.m. he had been robbed and carjacked in the area of 17th Avenue and Broadway.

The man said he was in his vehicle when a man and woman approached, repeatedly struck him, took his wallet, forced him out of the vehicle and drove away in it, Westerfield said.

Detective Gregory Fayson is investigating the carjacking.

Anyone with information about the robberies is asked to call detectives at 219-881-1210. To remain anonymous, call 866-CRIME-GP.