A motorcyclist is believed to have sadly died following a collision with a van at Shooters Hill Road in the past 90 minutes.
The road is completely closed in both directions between Kidbrooke Park Road and Sun in the Sands roundabout.
Bus routes 89, 178, and the 286 are diverted in both directions with route 132 diverted southbound.
The van driver stopped at the scene and is assisting police.
No arrests have been made.