AUSTIN, Texas (CBSDFW.COM/AP) — The police chief in the Texas capital city of Austin, who had been at the center of ongoing criticism following a fatal police shooting and controversial uses of force by officers, announced Friday that he is retiring after 30 years with the department.

Austin Police Chief Brian Manley said he knows in his heart “it is time to pursue that next opportunity” and does not think he could give the attention necessary to leading the police force as he has done since May 2018.

READ MORE: Tarrant County Constable Suspected Of Shoplifting At Former Workplace

Calls for Manley to resign have been persistent since the April police killing of Michael Ramos, who was driving away from officers. They opened fire after responding to a 911 call from someone who said Ramos was holding a gun to a woman with whom he was doing drugs in a car parked at an Austin apartment complex. Austin Police later said Ramos was found to be unarmed.

Austin police also caused serious injuries during protests over the police killing of George Floyd.

Floyd died in May after a Minneapolis police officer pressed his knee against the handcuffed man’s neck for several minutes while Floyd said he couldn’t breathe. His death sparked demonstrations against racial injustice around the world, including in Austin, where two protesters were hospitalized with head injuries after being shot by police with so-called less lethal munitions.

While Manley said he did not feel weighed down by the job but was simply looking for a new start, he recognized the police profession is under scrutiny, re-imagination and redesign and said he is confident “APD will come out of this a strong agency.”

“It has been my greatest pride to not only serve among but to be given the opportunity to lead the men and women of the Austin Police Department,” Manley said. “We may be imperfect, but I promise you the men and women serving you, serving our community, have hearts of gold and are here to serve you.”

READ MORE: North Texas Giving Day Raising Tens Of Millions For Local Charities

Following outcry over injuries sustained during previous confrontations with police, Manley announced the department would no longer shoot less-lethal weapons into crowds. The city announced in December that 11 Austin police officers had been disciplined for their actions during late May protests. The city did not detail the punishments or the specific complaints that led to the reviews.

Manley was the interim chief of police and became the lone candidate for his current role shortly after the department’s work on the case of a serial mail bomber that terrified the capital city of Texas.

Spencer Cronk, Austin’s City Manager who had recently stepped into his role when the serial bombings began, said he had personally been inspired by Manley’s leadership during one of Austin’s “most unprecedented public safety crisis.”

“Chief Manley’s integrity, sense of duty and commitment to serving with distinction and professionalism have shaped his career,” Cronk said.

In a memo, Cronk said Manley’s retirement would take effect on March 28.

MORE NEWS: City Of Fort Worth Opens New Mass COVID Vaccination Clinic

(© Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)