Up to 20min delays on BART after a debris fire on the tracks this morning pic.twitter.com/6iFmIIEAJ0

— Matthew Zamudio (@neutralcolored) June 30, 2016

BART travel ground to a halt in San Francisco Thursday, as crews fought a fire on the tracks near Glen Park Station.

According to tweets from the San Francisco Fire Department, at around 8 a.m. Thursday, a fire on the tracks halted area service and prompted an evacuation at Glen Park Station and from trains that filled with smoke after they passed over what SFFD describes as "burning debris."

#glannparkbart evacuation @sffdpio onsite pic.twitter.com/9DGDRRcBYp

— Jennifer Knecht (@JenKnecht4) June 30, 2016

My train was on fire and I got evacuated. To say I'm stressed is an understatement. Adulting is so hard! #bart #glenpark

— Flic Manning (@flicmanning) June 30, 2016

By 8:08 a.m., SFFD says, they had "mitigated the debris," but residual delays continued as the transit agency resumed service. According to BART spokesperson Alicia Trost, the commute-snarling debris was determined to be "smoking cardboard."

Earlier train w/ smoke has been resolved. Train operator reports going over smoking cardboard. Ventilation established, smoke dissipated

— alicia trost (@AliciaTrost) June 30, 2016

Glen Park Station being evacuated because of fire. #BART #SFBART @SFBART pic.twitter.com/PHVEddeU5P

— Erikk Jimenez (@erik1992) June 30, 2016

#SFFD have arrived. #Fire at #GlenParkStation @sffdpio @SFBART #BART pic.twitter.com/g9jaXIOUiO

— Erikk Jimenez (@erik1992) June 30, 2016

Five trucks, heavy rescue and light rescue. YOUR @sffdpio IN action. Super fast response time. #Bart #Bartfire pic.twitter.com/AS6GnG5AdQ

— David Prock (@the_deep_rock) June 30, 2016