The family of Paul Wilson is offering a reward of up to $10,000 for information leading to the arrest and indictment of whoever is responsible for his Jan. 2, 2019, killing in Danehy Park, Middlesex District Attorney Marian Ryan and Cambridge Police Commissioner Branville Bard, Jr. announced Thursday.

Anyone with information about this case can call state police assigned to the Middlesex District Attorney’s Office at (781) 897-6600, or Cambridge police at (617) 349-3121. People with information can also go through a third party, they said.

On Jan. 2, 2019, Wilson returned from work at IBM to the Porter Square T station and rode a Blue Bike home, parking it by his house on Sherman Street before walking through the park, investigators said. Wilson was found by a passer-by shortly before 6:48 p.m. on an asphalt path near the Danehy Park parking lot and dumpsters, near New Street. He was taken to Beth Israel Deaconess Hospital and pronounced dead from from significant head trauma at around 10:18 p.m. There were multiple blunt force injuries to his head, police said.

Videos given to police by people in the area have not provided any answers, and Ryan said hundreds of park neighbors and visitors have been interviewed.

In reminding possible witnesses of the details, Wilson was described as being approximately 6-foot-6. He was found in a location visible from the parking lot wearing a pair of shorts, a red winter coat, a winter hat and gloves.

This incident continues to be actively investigated by the Middlesex District Attorney’s Office, Massachusetts State Police assigned to the Middlesex District Attorney’s Office and the Cambridge Police Department.

The poster put out by law enforcement officials to make known the new effort to solve a killing.