Two bikes were locked using a U lock in the alley behind 1969 N Halsted APT 3. For familiarity purposes, I live above a restaurant named Taco Joint on North Halsted and between that street and the next there is an ally for parking and residential entrances. I locked both bikes up on a post on Saturday night behind my apartment in the ally. One was my roommates a turquoise Mongoose bike, an another was mine an antique Nishiki brand single speed bicycle that was a cream tan color. The bike was an heirloom from my father. I went outside this afternoon to move the bikes and they were both completely gone. There was no sign of them anywhere. I asked the restaurant and they had not seen the bikes either.