A Florida firefighter was arrested Thursday in a human trafficking bust following a two-year-long investigation, according to officials.

East Lake Fire Rescue Lt. Matthew Doyle, 38, faces several charges, including kidnapping, human trafficking and lewd and lascivious behavior on a victim between 12 and 16 years old, according to the Hernando County Sheriff’s Office.

Officials said Doyle was stung in a probe that was completed last week and resulted in the arrests of several people.

He was immediately suspended without pay. He had joined the department in 2005, the Tampa Bay Times reported.

“We were shocked by the arrest and the nature of the charges,” East Lake Fire Chief Tom Jamison told the newspaper. “We certainly take them very seriously.”

Doyle was booked around 10 a.m. Thursday into Hernando County jail, where he is being held without bail, according to court records.