Chicago police on Sunday were investigating a drive-by triple shooting in the Humboldt Park neighborhood, not far from the grounds of the Puerto Rican Festival.The CPD said three men were standing outside in a group near California Avenue and Thomas Street around 10 p.m. Saturday, when a vehicle pulled up and someone inside shot them all.A 27-year-old man was hit in the left and right legs and was in fair condition at Stroger Hospital of Cook County. A 42-year-old man was hit in the left calf, and a 45-year-old man was hit in the right leg. Both were in fair condition at Humboldt Park Health.All the victims were expected to survive.No one was in custody late Sunday.