Texas Department of Family and Protective Services said the Heart2Heart Montessori Academy near Fort Worth was likely negligent in proper care giving, a spokeswoman said on Thursday.
"The caregivers were withholding water from the children to avoid diaper changes," it said in a letter to the center without offering further details. The center did not respond to a request to comment.
The agency is allowing the center to remain open for a probationary period of six months due to a change in management, Marissa Gonzales, a spokeswoman said.
The agency launched its investigation after photos began circulating in June of a child duct-taped to a nap mat to restrain him during nap-time.
The photo was taken by a former caregiver who sent it to the parents of a child who was taped to the mat. Kristi and Brad Galbraith are suing for fraud and negligence in the incident, seeking $1 million in damages.
A separate criminal investigation of Heart2Heart by police in Willow Park is nearly complete and charges could be filed as soon as Friday, Police Chief Brad Johnson said.