Aberdeen police are investigating a stabbing in the city Thursday evening that left three people injured.

Police were first notified around 5:40 p.m. Thursday of a "disturbance" in the first block of Pritchard Avenue, but when they arrived, could not find anything or anyone.

Around 6 p.m., they received a second 911 call reporting that someone had been stabbed in the same block. This time when police arrived, they found a man and a woman, both adults, suffering from stab wounds - the woman was cut in the hip and ankle and  the man was cut in the abdomen, according to a press release from the Aberdeen Police Department. Both victims refused medical treatment and were "less than cooperative" with police officers, according to the release from Lt. Fred Budnick.

While they were investigating the incident, police were told that a third person, an adult male, had been taken in a private vehicle to Harford Memorial Hospital in Havre de Grace where he was suffering from a stab wound in the back, according to the release.

The third person was being evaluated and was expected to be flown to the Maryland Shock Trauma Center in Baltimore, according to Budnick.

Police said the motive behind the stabbing is not clear, but they believe all three people know each other.

No further information was available Thursday night.