Christopher Polk, 25, was shot and killed Feb. 24, 2018, in the 4400 block of Northwest Loop 410, near Balcones Heights.

Retail giant Wal-Mart will pay Pima County $35 million for the right to build a Supercenter southwest of Tucson, at Ajo Way and Kinney Road. The $35 million — an estimated 2 percent of the store's ...