The officers were called to the reports of a group that fights outside the station just after 7.30 pm yesterday (April 15).
The police conducted a search and a silver gun was found.
An 18 -year -old was arrested under suspicion of possession of a firearm and possession of class B drugs, namely Cannabis.
Remains in police custody to interrogate.
A Metropolitan Police spokesman said: “The police was called at 7:32 p.m. on Tuesday, April 15 for reports of a group that fights outside the Beckenham station.
“The officers attended, where a small group or supposedly had attacked another man.
A silver gun was recovered, and an 18 -year -old man was arrested in the scene under suspicion of possession of a firearm and possession of class B drugs, namely cannabis.
“He remains in custody to interrogate.
“The with is working with BTP in this research.
“If you witness or have any information that can help, call the police at 101 with reference 6391/15apr or call Crimeppers anonymously at 0800 555 111.”
