Fort Collins police Chief John Hutto, who has served in the post for five years, is resigning effective May 12 following a period of turmoil at his department.

Hutto announced the decision in a somber video posted to the Fort Collins police Twitter page, saying “the department is at a critical juncture and the time to make a change is now.”

FCPS Chief Hutto resigns, effective May 12: https://t.co/kUEapRvE2H pic.twitter.com/4DIkmAWUaS — Fort Collins Police (@FCPolice) April 18, 2017

“This decision was not made lightly, or in haste,” Hutto said. “We’ve faced some significant challenges over the past year and a half and I believe the organization will benefit from new ideas and a fresh perspective.”

Hutto said he is stepping down after consultation with Fort Collins City Manager Darin Atteberry and that the decision reflects his continuing commitment to the community.

“Thank you for many good years,” Hutto added.

Hutto and his department have been the target of several use-of-force and employment controversies in the past year or so.

In March, the city agreed to pay a school teacher $150,000 after a police officer entered his home in July without consent and pepper sprayed him in the face. Earlier this month, a college student was thrown face-first to the sidewalk by a Fort Collins police officer in a confrontation that was recorded and widely distributed online.

Authorities say 22-year-old Michaella Surat hit an officer multiple times before the incident, but are investigating the circumstances of the use of force. Hutto said in a statement afterward that the video lacked context.

In January, Fort Collins agreed to pay $425,000 to two officers who said the police department discriminated against them based on their race and country of origin. The Coloradoan reported that the city has also agreed to implement a series of measures to address discrimination, retaliation and policy violations uncovered through an independent investigation.

Sgt. Francis Gonzales and former officer Kennyberg Araujo alleged in a lawsuit that department leaders singled out minority officers for discipline. They also claimed Latino officers were passed over for promotions despite their qualifications.

Atteberry, in a written statement, said Hutto has served the community well and led Fort Collins police to several key accomplishments, including achieving Colorado Association of Chiefs of Police accreditation, establishing a neighborhood enforcement team and significantly enhancing community outreach.

Police say efforts are underway to find someone from outside the agency who will serve as the interim chief while a nationwide search for Hutto’s replacement is conducted.

The Associated Press contributed to this report.