A mom from North Troy, Vermont, and her two young children are missing.

Vermont State Police say Kayla Delzio, 28, called her parents Thursday and made plans to visit for Christmas. Police say Delzio's boyfriend, Michael Newton, has a warrant out for his arrest for escape from furlough, and they believe Delzio and her 9- and 4-year-old children may be with him.

Investigators aren't sure if the couple is hiding out. They say there has been activity on Delzio's cellphone and Facebook page. Police want to make sure she and the children are safe.

Delzio's parents tell WCAX News Newton is abusive and they believe their daughter and grandchildren are in grave danger.

"We believe that she is being held hostage. She was supposed to be here Christmas Eve and she never showed up. Our daughter has never done this before," Scottie Reynard said.

"I'm afraid I'm never going to see them again. And he's going to really do something drastic to them... Harm them in some way," Lisa Reynard said.

Delzio's parents searched area motels with no luck.

Police say Delzio may be in a 2009 black Toyota Corolla with Vermont plates FHP 865. Police say they have received information the group may be in the Lyndonville area. If you have seen Delzio or her children, call state police in Derby at 802-334-8881.