Dia de los Muertos in Tucson

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TUCSON, Ariz. -- Celebrations are underway for Dia de los Muertos, or Day of the Dead.

Alters are starting to be set up at the Tucson Museum of Art.

The celebration Wednesday honored children and Thursday is for adults.

The holiday is fused with Catholic traditions but is one of the most deep-rooted Mexican traditions, dating to pre-colonial times.