The husband of a missing family in Colorado has been arrested in connection with the case, police say.

The Frederick Police Department said officers had made an arrest in connection to the case involving 34-year-old Shanann Watts and her two daughters, Bella and Celeste.

The family were reported missing on Monday and a friend of Shannan's posted on Facebook that the Colorado woman had left her phone, purse, car seats and children's medicines at home that day.

The police said on Twitter that Chris Watts was taken into custody and will be held at the Weld County Jail. He has not yet been charged.

Chris Watts spoke previously with The Denver Channel and pleaded for his family’s safe return.

The FBI and Colorado Bureau of Investigation are working with local authorities in the case.

Authorities did not release any information on the whereabouts or conditions of the missing wife or daughters.