A giant sinkhole swallowed an intersection in the southwestern Japanese city of Fukuoka Tuesday morning, according to Weather.com.
The hole measured approximately 88 feet wide, 100 feet long and 50 feet deep, CNN reports.
By 8 a.m. local time, emergency crews had the sinkhole, which was partially filled with water, surrounded.
Power outages and a broken gas line were also reported shortly after the sinkhole formed.
Officials in Fukuoka were working to extended the subway from JR Hakata to the city center.
Motohisa Oda, a crisis management officer from the city, told CNN the construction work may have triggered the sinkhole.
Authorities have not yet confirmed what triggered the sinkhole.
Social media users in Japan, however, have been joking about all the possible causes.
"Uh oh, this thing might emerge in front of Hakata station," one user tweeted.