A cyclist riding with a group near the Diamond Street Cycling Loop, near the Tucson Mall, Tuesday night died after a confrontation with another person.

Tucson Police say the confrontation took place at 8:15 p.m. on the river path near the 400 block of East Wetmore. Upon arrival, officers located an adult male with trauma. Bystanders had attempted to render aid before officers took over first-aid. Tucson Fire Department personnel arrived shortly thereafter and transported the victim to Banner University Medical Center with life-threatening injuries. Despite life-saving efforts, he was pronounced deceased at the hospital. The victim was identified as 44-year-old Enrique Mercado. Next of kin has been notified. TPD Homicide Detectives were called to the scene and continued the investigation.

Based on early findings, detectives believe Mr. Mercado was riding a bicycle with a large group along the river path when he encountered an unknown individual. A confrontation followed, resulting in Mr. Mercado sustaining injuries. Members of the group stopped to help the victim and called 9-1-1. The suspect was last seen running from the area.

Anyone with information on the incident is asked to call 88-CRIME.