The Bureau of Alcohol, Tobacco, and Firearms announced an additional $5,000 reward Saturday for information connected to two fatal shootings that happened in Rogers Park earlier this week.
The Rogers Park Builders Group added $5,000 to a $10,00 offered by the Jewish Federation of Metropolitan Chicago and $1,000 from the Cook County Crime Stoppers.
Chicago police said 40 detectives, along with agents from the FBI and Bureau of Alcohol, Tobacco and Firearms, are searching for the man who is believed to have randomly murdered two men just 36 hours apart.
Douglass Watts, 73, was gunned down on a sidewalk in the 1400-block of West Sherwin on Sunday morning. Just a day later, 24-year-old Eliyahu Moscowitz was also shot in the head and left for dead on the pedestrian path in Loyola Park.
Watts and Moscowitz did not know each other, authorities said, but they were shot with the same gun.
"We all want answers," Steve Loskutov, Moscowitz's friend, told ABC7 News earlier this week. "We all want justice. It's sickening to think about it."
Chicago police shared about a minute of surveillance video of the suspect. At one point the masked man is seen jogging down an alley. In the video, the suspect appears to walk or run with his feet pointed outward.
WATCH: Surveillance video of Rogers Park murder suspect
It is believed that he lives in the neighborhood, and authorities hope his unique gait will help identify him.
REWARD: Suspect wanted in 2 recent homicides in Rogers Park. ATF Chicago adds $5,000 bringing reward to $16,000. Jewish Federation of Metro Chicago offering $10,000. Cook County Crime Stoppers $1,000. Report tips to https://t.co/qynX9njZUq or 1-888-ATF-TIPS pic.twitter.com/phnIkCiKub— ATF Chicago (@ATF_Chicago) October 6, 2018
Anyone with information is asked to contact police.