MATTHEWS, NC (FOX 46) - UPDATE: 2/2/17 (6 p.m.): A local family said they're thankful someone took the time to call Crime Stoppers and get results.
The anonymous tip led investigators to the person responsible for killing their loved one.
"You gave us peace when we didn't have much peace, hope, or much joy left," said Audrey Toscano-Davis, the victim's step-sister.
Fighting back tears, the family thanked police and the person who gave the anonymous tip that helped detectives catch the individual charged with killing 22-year-old Thomas McDonald at Sardis Place Apartments in early December.
"We want everyone to know he is loved still. He's greatly missed. For his mother, that was her only child, every day that will be a hole that will never be filled. His life was valuable. It was taken too soon and taken by senseless gun violence."
Police said they got results thanks to a tip from someone calling into crime stoppers on January 2.
"Based on the coverage you all did, we got an anonymous tip from crime stoppers and that was given to the homicide detective to investigate. That led to the arrest of Martin Robinson in Tennessee," said CMPD Detective T.m. Roddey.
Police said Martin Robinson will be transferred from Memphis to Charlotte next week. Robinson is charged with murder and robbery with a dangerous weapon. The victim's mother and step-sister remember the moment they got the call that he had been caught.
"I was happy, I thanked God. Thanked everybody. Prayers were answered," said the victim’s mother Tracey Willis.
The family had put up a $1,000 reward in addition to the $5,000 through Crime Stoppers for the information that led to the arrest.
That caller was and will remain anonymous as any caller into Crime Stoppers. The call center has interpreters to take tips in several languages.
(Previous article) - Charlotte-Mecklenburg police have charged a local man with murder in connection to the shooting death of a Matthews man in December.
Martin Alexander Robinson, 18, is charged with killing Thomas McDonald, 22, along the 2500 block of Cross Point Circle in Matthews on Dec. 7, 2016.
Upon arrival, officers found McDonald suffering from apparent gunshot wounds. He was taken to Carolinas Medical Center where he was pronounced dead a short time later.
Evidence gathered during the course of the investigation led detectives to identifying Robinson as a suspect in this case. Detectives determined Robinson had fled to and was likely living in Memphis, Tennessee.
Through coordinated efforts with the Memphis Police Department, Robinson was arrested without incident and taken to the Shelby County Jail in Tennessee.
Robinson is charged with murder and robbery with a dangerous weapon.
Police said the extradition process had already been implemented, but there is no current timetable on Robinson's return to Mecklenburg County.
This investigation remains ongoing.