More than 100 law enforcement officers continued to search on Friday for a man who the authorities say shot two men at his former workplace in Nassau County, killing one and seriously wounding the other. The suspect, San Ho Kim, 63, fled after the shooting.

The search operation, which covered Cold Spring and other parts of Putnam County, about 50 miles north of New York City, was to be scaled back Friday night, said Trooper Melissa McMorris, a spokeswoman for the State Police, one of several agencies involved in the search.

The manhunt had locked down schools, closed roads and sent hundreds of robocalls to households telling them of the search for Mr. Kim, who is considered armed and dangerous, authorities said. By Friday evening, all closings had been lifted, the police said.

Most of the 6,000 craggy acres of the Hudson Highlands State Park near where Mr. Kim’s white Honda Pilot was found late Wednesday night had already been searched by the end of the day on Friday, Trooper McMorris said. Some of the searchers had to be brought in by helicopter because of the treacherous terrain. Road and water patrols will continue, she added.