According to first word on the scene, this morning’s BART delays were due to an underground pursuit. It seems police officers chasing a suspect on the tracks between the 16th street and Civic Center stations lead to system-wide delays. Nail-biting! Power on the tracks were shutdown temporarily to let the fuzz safely run after the rapscallions. No word yet as to why the chase was all about. SFAppeal goes on to report that "as of 7:45, service had resumed, but BART anticipates delays in excess of 20 minutes for lines that pass through the Mission-Civic Center set of stops."