OKLAHOMA CITY - A haz-mat team did not find any residue after a liquid nitrogen leak in a building near downtown Oklahoma City, fire officials said.

The spill was reported shortly before 7 a.m. at 840 Research Parkway. 

Firefighters said the haz-mat team were checking on a liquid nitrogen release. The building was evacuated, but people are now being allowed into the building.

A hose popped off a tank but reset itself as a safety measure. No residue was found by fire officials.

No injuries have been reported.