Dale Jenkins was drunk when he crashed on Route 114 early Saturday, severely injuring a passenger, police said. He was suspended without pay.
The Eagle-Tribune identified the passenger as Gerard Letendre, 53, of 7 Olde Farm Lane, North Reading. The Tribune also reported Jenkins refused to cooperate with an emergency room doctor who asked for a blood and urine sample.
Jenkins was charged with OUI and carrying a gun while drunk. Police he had his own handgun inside the vehicle.
Jenkins, a member of the gang unit, has been with State Police for 14 years.
State Police said they will continue to monitor his case and "re-assess his duty status when appropriate to do so."
"State Police condemn all instances of impaired operation," Col. Timothy Allen said in a statement.