UPDATE: Both children and their father have been located. 

"Children and father have been located and are ok," a Grundy County Sheriff's Office spokesperson said

They were found in Monteagle.

The Grundy County Sheriff's Office said no one was injured and no charges have been filed.

PREVIOUS STORY: The Grundy County Sheriff's Office is asking everyone to be on the lookout for two missing children who are believed to be with their father.

The sheriff's office said 4-year-old Brynlee Wiggins and a 2-year-old Addlyn Crisp were picked up by their father, Brian Crisp, at daycare Friday around 3:00 pm.

"Crisp is not known to be violent but struggles with drug addiction," the sheriff's office explained.

Crisp was last seen driving a green 2006 Chrysler Town & Country van with tag number 1K2-0B6.

It is believed that he was possibly headed to McMinnville.

If you see them or have any idea where Crisp and the children could be, call 911.