Two men were stabbed in separate incidents Thursday afternoon in Manhattan's Upper West Side, with authorities taking a suspect into custody. The attacks occurred in broad daylight in the residential neighborhood.

The first stabbing took place near West 86th Street and Broadway. According to police, a 40-year-old man was walking on the sidewalk when an assailant approached from behind and stabbed him once in the back. The suspect then moved to West 86th Street and Central Park West, where he stabbed a second victim, a 50-year-old man, once in the chest.

Both victims were transported to a hospital. One of the men is currently listed in critical condition. Police have not yet determined if the attacks were random.