Honolulu Board of Water Supply crews responded to two sinkholes Thursday night on Oahu: a large trench in Salt Lake and a smaller one in residential Maunawili that trapped a van.

No injuries were reported in connection with the sinkholes.

The larger sinkhole was about 8 feet wide and 7 feet deep on Ala Lilikoi Street, in front of Salt Lake Elementary School. It was reported around 8:30 p.m., BWS spokesman Keoni Mattos said.

The agency’s crews noticed a nearby patch in the street and traced it back to Sept. 15 roadwork to repair a water main leak. However, Mattos said there’s no way to tell whether that leak in any way contributed to the sinkhole.

The trench was compacted and repairs completed by 5:15 a.m., so school traffic was not affected, he added.

The second sinkhole, which Mattos described as minor and only about a foot deep, resulted from a water main break in the 1200 block of Aloha Oe Drive in Maunawili.

Flooding "caused a lot of mud and the vehicle just sunk" about a foot down and had to be towed out, Mattos said. Nine BWS customers went without water service until about 8 a.m., he said.