A three-alarm fire on Sunday in a two-story Bensonhurst building continues to disrupt D train service on Monday morning.

D trains are bypassing 18th Avenue in both directions, ABC reported, adding that D trains are running on the N line from Stillwell Avenue to 36th Street. The building that was the site of Sunday’s fire sits under the elevated train line, ABC added.

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The FDNY said the fire started shortly after 7 a.m. Sunday on the upper floor of a two-story mixed-occupancy building on Utrecht Avenue near 85th Street, New York One added in a related report, adding that firefighters had the fire under control by 9:30 a.m.

Authorities from the Department of Buildings are still investigating the damage, transit officials said to ABC.

No injuries have been reported, New York One reported.