Authorities say they have not yet been able to locate Sang Ho Kim in Putnam County.

Kim is the suspected gunman in a workplace shooting Wednesday at Savenergy in East Garden City. Kim is described as disgruntled former vendor of Savenergy. Employee Zachariah Yong Jae Shin was killed in the shooting, and CEO John Hyng Choi was critically injured.

Kim's white Honda Pilot was located that night in Little Stony Point Park in Cold Spring.

Police have been searching the region by land and air, as well as by boat on the Hudson River.