A man was stabbed four times in the back and face during an alleged bid to kill him in west Belfast, a court has heard.
The 28-year-old victim suffered a punctured lung during the attack at Clondara Street on Monday.
The details emerged as John Finnegan, 26, of Brooke Crescent, was remanded in custody charged with attempted murder.
Belfast Magistrates' Court heard how the partners of the accused and victim are sisters.
A detective constable, who said he could connect Finnegan with the alleged offence, opposed bail due to the risk of interference with witnesses.
The officer told the court the victim was too ill in hospital to provide a statement to police.
"The suspect would have connections with the injured party due to his girlfriend and the injured party's girlfriend being sisters," he told the court.
It was claimed that an independent witness across the street witnessed the incident.
The detective confirmed that the victim had suffered three puncture wounds and a facial injury.
Defence solicitor Fergal McElhatton argued there was no suggestion Finnegan would not turn up for trial if released on bail.
He suggested the accused could be banned from contacting the victim, as well as being subjected to an alcohol prohibition.
But District Judge Fiona Bagnall refused the application on the basis of potential interference with the investigation.
She said: "There are still statements to be taken apart from the injured party."
Finnegan was remanded in custody to appear again via video-link next month.