Building collapse kills 7 in Argentina Relatives of the victims of a building collapse accident wait at a hospital in Corrientes of Corrie...

Building collapse kills 7 in Argentina

Relatives of the victims of a building collapse accident wait at a hospital in Corrientes of Corrientes province, Argentina, March 22, 2012. (Xinhua/Telam)

Photo taken on March 22, 2012 shows the building under construction which collapsed in Corrientes of Corrientes province, Argentina. (Xinhua/Telam)

Relatives of the victims of a building collapse accident wait at a hospital in Corrientes of Corrientes province, Argentina, March 22, 2012. (Xinhua/Telam)

Photo taken on March 22, 2012 shows the building under construction which collapsed in Corrientes of Corrientes province, Argentina. (Xinhua/Telam)

Photo taken on March 22, 2012 shows the building under construction which collapsed in Corrientes of Corrientes province, Argentina. (Xinhua/Telam)

BUENOS AIRES, March 22 (Xinhua) -- At least seven people were killed and three others injured when a building under construction collapsed on Thursday in the northern Argentine city of Corrientes, police said.

All the dead were construction workers, among whom four died at the site and three passed away in hospital, local news agency DyN quoted police and and medical services as saying.

Investigation is under way over the tragedy, which occurred when the workers were installing a water tank.