A 19-year-old man is in a "serious" condition in hospital today after being stabbed.
Detectives in north Belfast have arrested four people following the attack in the Cliftonville Avenue area at about 10pm last night.
The teenager's condition is described as "serious", but his injuries are not believed to be life-threatening, a spokesman said.
The four people held were assisting police with their inquiries, he added.
Site tribute to
9/11 air victims
Relatives of passengers and crew members who died on United Airlines Flight 93 will hold a private service for unidentified remains at the crash site the day after the 10th anniversary of the September 11 attacks.
The September 12 ceremony will take place at what's called the Sacred Ground site in the fields near Shanksville, the rural area southeast of Pittsburgh where the 40 passengers and crew members lost their lives after fighting terrorists for control of the plane.
The remains have been kept in three coffins inside a crypt for the past 10 years.
Cop quizzed on casino massacre
A police officer has been arrested in connection with the arson fire at a casino that killed 52 people in Mexico.
The state police agent was caught in a surveillance video inside an SUV outside Casino Royale, presumably connected to the attack.
Five alleged members of the Zetas drug cartel have been arrested in connection with last week's fire, called one of the worst attacks in Mexico's five-year drug war. At least 12 people were involved.
School murder case collapses
A judge has declared a mistrial in the case of a California teen accused of murdering a gay classmate at a junior high school three years ago.
Jurors told Judge Charles Campbell they were unable to reach a unanimous decision whether Brandon McInerney was guilty of killing 15-year-old Larry King.
The panel had been considering convictions ranging from voluntary manslaughter to first-degree murder.