An investigation is underway, after there were pictures of the midfielder at the site of an incident where a Range Rover crashed into parked vehicles.
West Midlands Police responded to the incident on Sunday when two parked cars suffered slight damage in the Dickens Heath area of Solihull.
The driver reportedly left his details with an individual at the scene, before walking away.
It is unclear if that individual was Grealish, or whether he was in the vehicle with the driver at the time.
Grealish put out a video less than 24 hours before this incident encouraging people to stay home because of the COVID-19 outbreak.
In a statement about the incident, the West Midlands police force said: "We were called to Waterside, Dickens Heath, just before 10am to reports that a Range Rover had crashed into two parked cars in the street. The driver left his details with a member of the public at the scene before leaving on foot, and will be spoken to by police in due course. Minor damage was caused to the parked vehicles.
"Officers are investigating the circumstances and anyone with information has been asked to get in touch, via Live Chat at west-midlands.police.uk quoting log 643 of 29 March."
Aston Villa are attempting to make contact with captain Jack Grealish after police investigated reports of a Range Rover crashing into parked cars in a Birmingham suburb today. Jack Grealish mobile has been been unreachable all day. #AVFCpic.twitter.com/KNXUdfxMEF
— indykaila News (@indykaila) March 29, 2020