CHICAGO (CBS) — An elderly man on his way to dialysis treatment, was shot and killed right outside of his door, in what police are calling a robbery.

Chicago police say 72 year- old William Strickland walked out a side door of his home in the 400 block of E. 95th St. when he was ambushed by two men around 3:30 a.m. Saturday. Strickland was shot, and died in a gangway on his property, between the house and a fence.

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Strickland’s daughter, Lesley Strickland tells CBS 2’s Courtney Gousman, the shooters made off with a plastic bag that contained a pillow for her father’s dialysis treatment, and his wallet. According to his daughter, Strickland’s three gold chains were still around his neck, and his cell phone was still in his pocket.

Lesley Strickland believes her father’s shooters knew his routine, and targeted him.

“I do not feel as though it was a robbery. I feel as though it was up close and personal because they knew the exact time he was coming out the house, and he’s been making this dialysis trip for four years, same time,” said Lesley Strickland.

Strickland’s daughter also tells CBS 2, a PACE mini-van driver parked in front of her father’s home, witnessed the shooting as he waited to take William Strickland to a dialysis center near 79th & Cicero.

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“That’s the same Pace driver that’s been picking up my father for years, and come to find out, he worked with my father years ago at the steel mill, so he knew him personally,” said Lesley. William Strickland was retired from Acme Steel Company in Riverdale.

William Strickland’s wife and grandson were home at the time of the robbery. Strickland’s wife was near the door, locking-up, as he husband left the home.

The crime scene sits directly across from Chicago State University, where William Strickland has lived for the past 37 years.

The grandfather of three just celebrated his 72nd birthday last Sunday.

Chicago Police say Strickland is the second person to be shot and killed in the month of March.

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