Cordons have been put in place around part of Bootle on Merseyside by police investigating reports of "two loud bangs."
Officers were called to Jersey Close near the Strand shopping centre on Friday night.
They say they are still trying to establish the circumstances and they have not received reports of anyone being injured.
"We are in the very early stages of our investigation and we are trying to establish exactly what happened. At this point it would be wrong to speculate about what has happened so we are appealing to anyone who saw anything suspicious in the area around 11pm last night to talk to us.”
Officers are carrying out witness, forensic and CCTV enquiries and have been providing reassurance to people in the area.
Anyone with information can contact @MerPolCC or 101 with reference 1122 of 4/10/19 or come forward anonymously to Crimestoppers on 0800 555 111.