Singh, of Monroe, suffered a gunshot wound to the upper torso, according to the Hamilton Police report.
Police were dispatched to 502 East Ave. at approximately 10:32 p.m. Saturday.
Singh, was taken to Fort Hamilton Hospital and then transported by medical helicopter Miami Valley Hospital in Dayton. He was not listed in the hospital directory Monday, according to a spokeswoman.
This news outlet was at the scene of the shooting Sunday, but neighbors declined to comment or provide information regarding the incident.
Police Chief Craig Bucheit said in a social media post on Sunday afternoon that Hamilton Police Department investigators worked through the night to locate the suspect.
The “invaluable assistance rendered by residents and witnesses demonstrates (the) power of cooperation” in keeping the community safe, Bucheit said in the post.
Roberts was sent to prison in 2016 after pleading guilty to trespass, unlawful restraint and assault, according to Butler County court records.