For the next few years Line 1 operations ran smoothly . In 2000 , however , employees of METRO Inc. went on strike , paralyzing Line 1 operations from July 25 to August 2 , 2000 . Consequently , the LRTA did not renew its operating contract with METRO Inc. that expired on July 31 , 2000 , and assumed all operational responsibility . At around 12:15 pm on December 30 , 2000 , a bomb — later learned to have been planted by Islamic terrorists — went off in the front coach of a Line 1 train pulling into Blumentritt station , killing 11 and injuring over 60 people in the most devastating of a series of attacks that day , now known as the Rizal Day bombings
Rizal Day bombings
Rizal Day bombings
Manila Light Rail Transit System