A Mercer County family is mourning and asking for prayers after a 17-year-old Sharon High School senior was shot and killed while riding his bike with a group of friends over the weekend. 

Authorities said the alleged shooter confessed to pulling the trigger, but investigators are working to piece together why he did it. 

It was about 9 o'clock Saturday night when Sharon police responded to reports of shots fired near the intersection of South Dock street and Budd Street, just minutes from the police department. It was there police found Gavin Beighley, laying on the ground.

The Criminal Complaint said Beighley was shot in the torso and then rushed to the hospital, where he died from injuries.

Family members said he was kind, smart, always smiling and loved everyone. Beighley's mother Jessica said her son "was an innocent party and did nothing to deserve this."

After nearby reviewing surveillance video, Sharon police said they were able to track down the suspect, 19-year-old Curtis Coleman lll of Farrell.

The District Attorney's office said on Sunday, Coleman confessed to intentionally shooting at the group of bicyclists causing Beighley's death. Records said Coleman admitted he was down the street with two other teens when he fired a 22 caliber gun six times toward them.

According to the complaint, Coleman said Beighley's "...group had not threatened him and was approximately 200-300 yards away when he fired upon them."

The complaint goes on to state Coleman claimed he did not realize "someone had died" initially, and later apologized to the family. 

Coleman is now behind bars held on a $2-million bond charged with criminal homicide, aggravated assault, carrying a firearm without a license, and recklessly endangering another person. 

Authorities said the investigation is ongoing. 

The Sharon School district said they're offering support to students and Beighley's family. The Beighley's said they are accepting donations made directly to McGonigle Funeral Home, in Gavin's name.