FLORENCE --A Burlington Township police officer has been charged with vehicular homicide in an off-duty crash that killed a passenger in his car last month after tests determined he was driving drunk, authorities said.

Justin Rodriguez, 25, an officer with the township for 11 months, was charged with causing the death of 27-year-old Ariana Williams in the crash early on Sept. 23 in Florence.

"The investigation revealed that Rodriguez had consumed an excessive amount of alcohol in the hours leading up to the crash," the Burlington County Prosecutor's Office said in a release.

Rodriguez was arrested Thursday morning and released after posting $50,000 bail. He also faces charges for driving while intoxicated, failing to observe traffic lanes, reckless driving, driving 86 mph in a 45 mph zone, having an open container of alcohol in his car and not wearing a seat belt, authorities said.

He has been suspended without pay, according to a statement from the Burlington Township Police Department.

"The officer has been on administrative leave since the date of the crash," the statement said. "However, as a result of the current charges, he will now be suspended without pay. He will remain in that status pending the outcome of the criminal case."

Rodriguez was driving his Acura Integra around 2:10 a.m. when he lost control and struck a pole on West Front Street. Williams, of Florence, was pronounced dead at the scene.

Rodriguez was critically injured when he was thrown from the car. He was released from Capital Health Regional Medical Center on Sept. 26.

Rodriguez has been on the force for 11 months. He graduated from the Gloucester County Police Academy in December.

"As an agency, the Burlington Township Police Department values our professionalism and integrity above all else," police department officials said in a statement. "The allegations against this officer do not reflect those values, and they have no place in our agency."

Editor's Note: This post has been updated to include the additional charges.

Cristina Rojas may be reached at crojas@njadvancemedia.com. Follow her on Twitter @CristinaRojasTT. Find NJ.com on Facebook.