Picture: Bogdan Ghinea-Nastasa
Police were called to reports that the person had been seen with a firearm on the 103 route service in Rainham Road just before 2.30pm this afternoon.
A nearby road, Brookway, was sealed off while police searched the area.
The alleged perpetrator and victim had both left before officers arrived.
A Met Police spokesperson said: “Several passengers claimed to have seen a firearm although this has not been confirmed.
“Officers remain in the area.
“There have been no arrests and enquiries continue.”
Tags: Havering, Rainham