Blast occurred at Oradell Animal Hospital in Paramus on Friday just before midnight ; no fire reported but there was a helium leak . Also in critical condition is a construction worker who suffered from lacerations and crushing - related injuries to his abdomen . Two other workers reported respiratory complaints and other minor injuries ; none of three workers are employees at hospital . Around 100 hospital employees and other animals were in building including dogs , cats and wild bird ; all escaped with no injuries .
Blast occurred at Oradell Animal Hospital in Paramus on Friday just before noon ; no fire reported but there was a helium leak . Man in critical condition is contract construction worker who suffered from lacerations and crushing-related injuries to his body . Two other workers reported respiratory complaints and other minor injuries ; none of three workers are employees at hospital . Around 100 hospital employees and 60 animals were in building including dogs , cats and one bird ; all escaped with no injuries .