Authorities in Florida are asking for tips from the public as they try to find the person responsible for gunning down a 15-year-old boy walking to school this week.

As the U.K. Daily Mail reported, Orlando police have announced a $10,000 reward for information leading to the capture of Alejandro Vargas Martinez’s killer.

Police say the teen was walking by an elementary school at around 6:30 a.m. on Tuesday on his way to Boone High School, about a half mile away.

He was reportedly shot execution style and was pronounced dead after he arrived at an area hospital.

As of the latest reports available, investigators had not announced a suspected motive for the homicide.

“Certainly the death of a child, a 15-year-old, is extremely tragic and to happen one week before Christmas, I can’t imagine how the parents are feeling right now,” Sheriff John Mina said of the incident.

Boone High School’s principal posted a social media statement addressing the shooting, as reported by the Orlando Sentinel.

“We were made aware by law enforcement that early this morning one of our students was tragically killed on the way to school,” Dusty Johns wrote.

He offered “thoughts and prayers” to the teen’s family and confirmed “a crisis team” would be available to assist those in need of counseling.

“In addition, out of an abundance of caution, we will have additional law enforcement presence on campus,” Johns added.

Dolka Martinez, the slain teen’s aunt, remembered him as “a great boy, a good son, awesome brother, nephew” and “such a lovable boy.”

The family has established an online fundraiser in an effort to cover his final expenses.

Those with information related to the shooting are asked to contact the Orange County Sheriff’s Office by calling 1-407-254-7000 or provide an anonymous Crimeline tip at 1-800-423-TIPS.

[Featured image: Alejandro Vargas Martinez, GoFundMe]