JACKSONVILLE, Fla. – A former Jacksonville Sheriff's Officer pleaded guilty to stalking his ex-girlfriend and was sentenced to time served in jail, and one year probation.

During the probation, Chad Collier must wear a GPS monitor and was ordered to have no contact with the woman, go to psychiatric counseling twice a week, and attend Alcoholics Anonymous meetings twice a month. He was also ordered not to own any firearms.

Collier retired from the Sheriff's Office on Dec. 16 as a police sergeant after 25 years with the agency.

Court records show Collier continued to contact his ex-girlfriend from February, 2016 to December, 2016, including after he left the Jacksonville Sheriff's Office when he continued to send text messages and drive around his ex-girlfriend's new boyfriend's neighborhood. An arrest warrant on stalking charges was issued Dec. 20, 2016.

Collier's ex-girlfriend filed for a protective injunction in August, but a judge denied it.

After the couple broke up in 2015, police said Collier tried to kill himself, but survived. He was held under the Baker Act and was released in March. According to court records obtained by News4Jax.com, that’s when his former girlfriend claimed he began stalking her.

Collier kept his job at the JSO, but the Integrity Unit began investigating him. They tracked Collier’s car and said they had records proving that he drove past the victim's home and workplace.