Cryogenic cylinders full of cattle semen have gone up in flames at an artificial insemination facility in Australia.

A fire broke out at Yarram Herd Services in regional Victoria at about 3am on Tuesday. A crew of more than 30 firefighters brought it under control within three hours.

The cause remains unknown. ABC reported that 100 of the cryogenic cylinders were destroyed in the blaze.

“There was a large number of explosions due to the cryogenic cylinders, hence the CFA [country fire authority] attended,” a fire service spokesman said.