Sound Transit reported the Sounder commuter rail between Tacoma and Seattle was disrupted this morning after a fatal accident on the tracks south of Puyallup. A southbound Sounder train struck a trespasser on the tracks about 1.5 miles south of Puyallup Station between 6:50 and 7:10 a.m. All Sounder service in the area was halted. Sound Transit cancelled the final two trains out of Tacoma for the morning commute and directed passengers to Seattle-bound bus service from the Tacoma Dome Station. The final Southbound train of the morning commute stopped in Puyallup and returned north serving stations into Seattle. Authorities are investigating the circumstances of the accident and seeking information about the victim. At this time no delays are expected for the afternoon commute.