(Update 1 p.m.): Police have informed us that Juan Martinez, 23, was arrested on suspicion of hitting and killing a pedestrian on Christmas Eve and driving away. Read more after the jump.
A man was found dead underneath Highway 101 in the Mission District on Christmas Eve morning in what police are calling a brutal hit-and-run accident.
Police found the man on an island underneath the freeway at Potrero and Cesar Chavez at about 8:30 a.m. on Saturday. A preliminary investigation concluded that someone drove onto the island, hit the man, and then drove away, leaving him there to die.