The Red Line has been a mess since about 1 p.m. due to another death on the rails. The Post reports that an unidentified woman was struck and killed by an oncoming train after she “intentionally placed herself on the tracks” at Bethesda. The station was completely closed for about 20 minutes after the incident, and Red Line trains have been sharing one track for most of the afternoon. Officials are warning that ramifications from the investigation into the woman’s death could last quite some time into the evening. This is the second such incident this weekend — yesterday, a man was struck by a train at the Potomac Avenue station.