PITTSBURGH — Police say one man is dead and at least one other person is injured after a knife attack in Pittsburgh.

Investigators say two people are in custody in the stabbing that killed 26-year-old Michael Weismantle early today on the city’s North Side. Police say Weismantle was stabbed multiple times.

Authorities say another victim went to a hospital and a possible third victim walked into a police station after the stabbing.

Homicide detectives questioned a father and son in the killing and charges are expected.