YORKTOWN, N.Y. - In the wake of Chief Daniel McMahon’s retirement last month, movement within the Yorktown Police Department left vacancies at the positions of lieutenant, sergeant and traffic safety officer. Those positions have now been filled.

Robert Noble, acting police chief for Yorktown, led a ceremony last month swearing in the newly promoted officers.

Noble took over as acting chief after McMahon began his vacation June 10. He will not officially retire until the end of August. Noble began his career with the Yorktown Police Department in 1994. From 2001 to 2005, he was the department’s sergeant, and in 2005 he was promoted to lieutenant.

Sign Up for E-News

Having left a hole to fill in that role upon his promotion, Noble announced Sgt. James Graham as his appointed replacement as lieutenant. Graham was not present at the June 21 board meeting and a ceremony is scheduled for early September.

Also at the meeting, Officer Justin Foley was introduced as the department’s newest sergeant. Foley was born and raised in Yorktown and began his law enforcement career in the Bronx in August 1998. He assisted with rescue and recovery efforts after 9/11 and has received several commendations throughout his career. Since joining the Yorktown Police Department in 2002, he has held numerous positions, including traffic safety officer.

“We’re lucky to have him,” Noble said. He said Foley is a “good fit” for the people he will serve in the community and the people who will serve under him.

Foley thanked his colleagues, the board and his family.

“I work alongside some of the bravest and most professional men and women in law enforcement who do an incredible job every day in keeping Yorktown safe and we should all be proud of them,” he said.

Officer Tim Kolkmann was sworn in as the new traffic safety officer, replacing Foley, who was traffic safety officer for only a few months. Kolkmann is in his ninth year with the Yorktown Police Department and was crucial in the 2014 investigation and arrest of the man responsible for the fatal-hit-and-run accident that killed 73-year-old Jefferson Valley resident Georgia Turner.

“That case would have haunted us had we not solved it,” Noble said.

Noble also mentioned a 2011 incident in which Kolkmann apprehended a suspect who fled a burglary.

“He has been an asset to this department and is looking forward to his new assignment in the traffic safety unit,” Noble said.

Two newer officers, Timothy Curtin and Gregory Palladino, who joined the force last summer, were also sworn­in at the ceremony.

“The town of Yorktown should be very proud of its spectacular police force,” Supervisor Michael Grace said. “We’re very fortunate to have a great police department.”