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OTTAWA, Canada — A massive sinkhole formed Wednesday in downtown Ottawa, Canada, swallowing a parked van and promoting evacuations of a major shopping center and the Westin Hotel.

Overnight,  truck poured concrete into the sinkhole in an attempt to stabilize the nearly three-story deep hole, reports CBC News.

Crews continue to monitor the integrity of the road and sidewalks around the hole which open unexpectedly about 10:30 a.m. on Rideau Street near the construction site of Ottawa’s Light Rail Transit.

No word on what caused the collapse.

Ottawa Police said a water main break and a gas leak were also reported in the area.

No injuries have been reported.

  • A large portion of Rideau Street in downtown Ottawa, Ontario is seen caved in, causing a massive sinkhole that knocked out power to the majority of the downtown area on June 8, 2016. The massive sinkhole formed next to a shopping mall in downtown Ottawa, caused a gas leak and forced the evacuation of all nearby businesses. (Chris Roussakis/AFP/Getty Images)
  • TOPSHOT - A large portion of Rideau Street in downtown Ottawa, Ontario is seen caved in, causing a massive sinkhole that knocked out power to the majority of the downtown area on June 8, 2016. The massive sinkhole formed next to a shopping mall in downtown Ottawa, caused a gas leak and forced the evacuation of all nearby businesses. (Chris Roussakis/AFP/Getty Images)
  • A large portion of Rideau Street in downtown Ottawa, Ontario is seen caved in, causing a massive sinkhole that knocked out power to the majority of the downtown area on June 8, 2016. The massive sinkhole formed next to a shopping mall in downtown Ottawa, caused a gas leak and forced the evacuation of all nearby businesses. (Chris Roussakis/AFP/Getty Images)
  • A large portion of Rideau Street in downtown Ottawa, Ontario is seen caved in, causing a massive sinkhole that knocked out power to the majority of the downtown area on June 8, 2016. The massive sinkhole formed next to a shopping mall in downtown Ottawa, caused a gas leak and forced the evacuation of all nearby businesses. (Chris Roussakis/AFP/Getty Images)
  • A large portion of Rideau Street in downtown Ottawa, Ontario is seen caved in, causing a massive sinkhole that knocked out power to the majority of the downtown area on June 8, 2016. The massive sinkhole formed next to a shopping mall in downtown Ottawa, caused a gas leak and forced the evacuation of all nearby businesses. (Chris Roussakis/AFP/Getty Images)