The British Transport Police (BTP) are appealing for information after a man allegedly pushed a member of staff down the stairs at a Tube station.
The incident happened on December 16 at Balham underground station.
A BTP spokesperson said: "A male staff member was pushed down the stairs following an altercation with another man at approximately 1.15pm.
"Officers from BTP attended and arrested an 18-year-old man from Walthamstow on suspicion of grievous bodily harm, possession of an offensive weapon and fare evasion.
"He was released on police bail until Friday 10 February.
"A 20-year-old man from Walthamstow was also arrested on suspicion of common assault and also released on bail until 10 February."
If you have any information regarding this incident, contact the BTP on 0800405040 (24 hours) or text 61016 and quote Incident Log 259 on 16/12/16.
All contact will be treated in confidence.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here