The family of a 74-year-old man slain late last year as he took his daily walk in his northwest Harris County neighborhood pleaded with the public Monday to help police find his killer.

Maglorio Reynaldo Cortes was found about 6 p.m. Nov. 7 lying shot and unconscious in the middle of the street in the 11000 block of Springsong, according to the Harris County Sheriff's Office. Cortes later died at a nearby hospital.

Residents told investigators Cortes was well-known in the area and that he took walks in the neighborhood every day.

They said they heard several gunshots moments before they found Cortes. They also saw a 2010 or 2011 dark-red or maroon four-door Chevrolet Cruze leaving the area soon after the gunfire. Several men were inside the car. Their description was not available.

Investigators said robbery does not appear to be a motive and they have no other clues that may help explain what sparked the gunfire.

"We expect that it was senseless at this point," Sgt. Sydney Miller of the Harris County Sheriff's Office said during a news conference Monday.

Lesly Cortes said her grandfather was the patriarch of their family. He was a loving man who cared for his family more than anything else. He liked to travel and to play soccer with his young great-grandchildren and he loved walking in his neighborhood every day for exercise. She said she hoped someone who knew about the case would contact investigators.

"Help put these people where they belong," the 26-year-old said. "They not only took his life that evening, but a piece of each of us."

Anyone with information about the case is urged to contact Crime Stoppers at 713 222-TIPS(8477) or online at Tips also can be sent by text message. Text TIP610 and tips to CRIMES. Crime Stoppers will pay up to $5,000 for information that leads to the arrest of a suspect in the case or felony charges being filed against the suspect.

All tipsters remain anonymous.