Police were called at 6.48pm on Tuesday, 21 March to reports of a man seen in possession of a firearm on Black Lion Lane, Hammersmith
Due to the nature of the call, armed officers attended and carried out a search of the area. No suspect was located and no injuries were reported.
Enquiries are ongoing and anyone with information is asked to call 101 quoting CAD 6033/21MAR. To remain anonymous contact the independent charity Crimestoppers on 0800 555 111.