COLD SPRING - Police called off their active search at sundown Thursday for a suspected Long Island gunman, and are planning to resume looking Friday morning.

More than 100 police officers are looking for Sang Ho Kim, who allegedly walked into an East Garden City business and shot the store owner and an employee Wednesday morning. Police say they are unsure whether Kim is alive or dead, and say they have leads pointing in both directions.

Police recovered Kim's car near a Metro-North train station and say they are not ruling out the possibility that he skipped town.

Kim's sister spoke with News 12's colleagues at Newsday, saying her brother left her a voicemail two hours after the shooting indicating he may have been considering taking his own life.

Police say the search could take several days.

Authorities set up checkpoints in Cold Spring and stopped and searched all cars in the area today as they looked for 63-year-old Kim, who lived in Queens. They also checked the trunks of all vehicles.

The FBI even went door-to-door to search for any clues that could help find the alleged gunman. Armored vehicles also moved into the area.

Law enforcement descended on Cold Spring after the SUV belonging to Kim was found just feet from the Hudson River shoreline. Officials say the car was discovered Wednesday night at around 11 p.m.

Officials are asking with anyone with information on Kim to call 1-845-808-4350.