Officers were alerted to a large group of youths on Blackheath Common at around 3.30pm today (April 8).
A road closure was put in place between Shooters Hill Road and Montpelier Road along Prince Charles Road.
Police remain at the scene dispersing youths but believe the majority of those involved have already been cleared earlier in the afternoon.
There have been several arrests for separate offences, but that the exact arrest figure is unknown at this stage.
Arrests on suspicion of possession of an offensive weapon in a public space are among those that were made, and the situation continues to be monitored.
A section 60 order has been authorised for the area allowing officers to conduct stop and searches on individuals without reasonable suspicion in a defined area and time.
It is unknown how long the order will be in place for.
Police enquiries are ongoing.
A Met spokesperson said: “On Tuesday, 8 April police were made aware of large group of youths causing disorder on Blackheath Common.
“Officers are currently on scene dispersing youths who may still remain, while the majority were cleared throughout the afternoon.
“There were several arrests for separate offences, including arrests for possession of an offensive weapon in a public place.
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“A section 60 order has been put in place within the area.
“Police continue to monitor the situation.
“Enquiries are on-going.”
