TUCSON - Search efforts continue Sunday morning for missing 6-year-old Isabel Mercedes Celis.

The young girl was last seen around 11 p.m. Friday night at home, located in the 5600 block of East 12th Street, near Broadway Boulevard and Craycroft Road, according to Tucson Police Department spokeswoman Sgt. Maria Hawke.

Isabel's parents put her to bed at 11 p.m. Friday night, Hawke said. When her father went to wake her up around 8 a.m. Saturday, Isabel was gone. The family called police around 8:15 a.m.

Police began a massive search Saturday, including officers from Tucson Police, FBI agents,a large contingent of deputy U.S. Marshals, deputies from the Pima County Sheriff's Department, and blood-hounds from the Arizona Department of Corrections.

Police searched the neighborhood all day Saturday, using ground patrols, helicopters, and K-9's. They also served multiple warrants in the area.

Police also searched cars driving into and leaving from the neighborhood throughout the day.

Hawke said investigators were looking into all potential
scenarios, including the possibility that Isabel got up and wandered out of the home she shares with her parents and two brothers.

By Saturday night, police began calling the disappearance a "suspicious disappearance" or "possible abduction," Hawke said.

As it got later in the day Saturday, it became less likely that Isabel wandered off, according to Hawke.

Police have many leads and continue to follow up on them Sunday morning, according to Hawke.

KVOA News 4 Tucson has a crew at the scene and reports that there is significantly less law enforcement activity in the area Sunday morning.

Sgt. Maria Hawke said the search area is being widened and all investigative leads are being explored.

Isabel is described as being just under 4- feet tall and weighs approximately 44 lbs. She was last seen with her hair in two long braids. She is missing one front tooth and one bottom tooth.

Anyone with any information about Isabel's disappearance or whereabouts is urged to call 911 or 88-CRIME.

KVOA is working to get contiunuous updates from Tucson Police Department and will continue to provide updates on the investigation on KVOA.com and KVOA News 4 Tucson throughout the day.