Authorities have rounded up 18 of the 21 people accused of mistreating patients at an Alzheimer’s center in Commerce, the GBI said Friday.

The suspects — including the owner of Alzheimer’s Care of Commerce — are accused of slapping residents,throwing water on them and double-diapering so they wouldn’t have to be changed so often.

The suspects — current and former employees — face a combined 72 charges. Twenty-six residents were sent to other facilities on Tuesday following a two-month investigation spearheaded by the GBI.

Families of the residents said they were shocked by the allegations. An attorney for owner Donna Wright said residents were treated like family.