NEW YORK (CBSNewYork) — A weekend derailment is causing problems Monday morning for people taking the Long Island Rail Road. At least eight LIRR trains on the Babylon, Hempstead, Port Washington, Ronkonkoma, Far Rockaway and Oyster Bay branches will not be running as the MTA works to repair tracks that were damaged. Here are the anticipated cancelled/partially cancelled trains for the morning rush on Monday, July 23rd. pic.twitter.com/oDBiqzKABE — LIRR (@LIRR) July 23, 2018 The MTA says a non-passenger train was passing through the West Side Yard Saturday night when two middle cars derailed. The cause of the derailment is unclear and the MTA says it is investigating. But the incident damaged tracks that needed for trains to travel to and from the yard. Commuters say they were never notified. “They always like to speak of transparency, yet there never seems to be sufficient transparency,” said Medford resident John Gallaer. “Even when they get delays or anything they never mention it,” said Queens resident Sakshi Bajaj. Meanwhile, seven lines were already scheduled to have changes Monday morning as new summer timetabled take effect. For more information, click here .