MBTA Police are asking for the public's help in identifying an alleged cell phone thief who robbed a woman on the platform of the Fields Corner T station last month. In a video posted on the T Police website, the individual is shown escaping through the station's turnstiles after the incident on Dec. 19.

Contact the MBTA's Criminal Investigations Unit at 617-222-1050 with any tips. Anonymous tips can be sent in via text to 873873.