An 18-year-old was stabbed more than 40 times in Malcolm King Park.

Alexander Rivas, 18, has been charged with running a prostitution ring involving underage girls. Rivas, a member of the MS-13 gang, allegedly transported teenage girls who had run away from their homes into the D.C. area to work as prostitutes. A 17-year-old girl involved in the prostitution ring reported to investigators that Rivas would carry a machete, which he called “his wife,” with him when he took her to prostitution appointments. Federal prosecutors say that…