Police rushed to Preston Road in Wembley last night after reports of gun fire.
A large police cordon was put in place at the scene. Preston Road was blocked off in both direction at 9:19pm and cleared just before 5am.
Bus routes affected included the 79, 204 and 223.
Met Police told Harrow Online: “Police were called at about 20:20hrs on Saturday, 8 April to reports of a firearm discharge on Preston Road in Wembley.
“Officers attended. There were no reported injuries.