( CNN ) -- A charter plane carrying county government workers crashed on the Hawaiian island of Lanai on Wednesday night , killing three people and injuring three more , Maui County spokesman Rod Antone said . The pilot and two Maui County Department of Planning workers were killed when the plane crashed about 1 mile south of an airport of Lanai City , according to a news release from Antone . The injured were taken to a hospital . Two of them , who also were planning workers , were in critical condition Thursday morning . The third , an attorney , was in serious condition , the county said . No names were released . Information about what led to the crash was n't immediately available . The group had attended a planning commission meeting on Lanai earlier Wednesday , and the plane -- a twin-engine Piper PA31 , according to the Federal Aviation Administration -- was to bring them back , the county said . The plane took off from Lanai Airport at about 9:05 p.m. , and one of the injured passengers called 911 to inform authorities about the crash at 9:23 p.m. , the county said . UPS pilots complained of fatigue before fatal crash . Pilot in Tennessee plane crash heroically protected lives . CNN 's Ben Brumfield contributed to this report .
Plane carrying county government delegation crashes on Maui County 's Lanai island . Pilot and two Hawaii Department of Planning workers are killed , county says . two injured people are taken to a hospital . Group was on return flight after attending a meeting on Piper PA31 .