A violent armed robbery in the Delmar Loop has police searching for four suspects.Three of the crooks, all young men in hooded sweatshirts, ambushed a 26-year-old woman shortly before 3 a.m. on July 11 as she walked just west of Skinker Boulevard on the 6200 block of Delmar, according to police.
Two of the attackers sneaked up on her from behind and held a gun to her head before trying to wrench her purse away.…