An Amber Alert has been issued for four missing children, ages 7 to 11, last seen in Fort Collins. Police are looking for a gray 4-door Honda, license plate CO 426JHO. The car has damage to the right front quarter panel.

The four children are believed to be with 25-year-old Jeronimo Santiago Romero. He's described as Hispanic, 5 feet 7 inches tall, with a shaved head, several tattoos, and a goatee, wearing a blue t-shirt with a Corona beer emblem, light blue sweatpants and brown suede slippers.

Police say that Romero was babysitting five children and failed to return four of them at the designated time and place. They say he has a criminal history and the children are believed to be in danger. Romero has ties to the Greeley and Fort Collins area.