An infestation of biting spiders has forced a school in England to close.

The school, located in southwest England's Gloucestershire, has experienced a plague of false widow spiders, reports the Associated Press. The spiders are a relative of the deadly black widow spider. Both spiders bite, but only the black widow has poisonous venom, which can be deadly.

While no students have been bitten so far, the school will close until the arachnids can be completely removed.

The spiders are becoming more common in the U.K., but are not known to cause deaths.