Joel Martinez, a 42-year-old Latino man, was shot and killed on September 26, 2021, near 1902 N. Marianna Ave. in the El Sereno neighborhood of Los Angeles.

Investigators treated the shooting as part of a broader pattern of violence in the area and pursued multiple leads. Several suspects were identified and charged with crimes connected to the murder, including conspiracy and weapons offenses.

What information do readers have about activity around N. Marianna Ave. in El Sereno on or before September 26, 2021?