Authorities are investigating allegations that an Oklahoma day care drugged children to make them sleep.

A former employee at Sue’s Day Care went to authorities and claimed that the day care's owner told workers to give liquid Benadryl to infants ahead of nap time.

Benadryl is not recommended for children under the age of 1.

Officials have identified seven victims so far, although no one suffered serious injuries, Reuters reported.

The Oklahoma Department of Human Services has ordered Sue's Day Care to remain closed until the agency's investigation is complete.

The day care has not yet commented on the allegation, and its owner has not been charged with anything.

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