Four men, including a teenage boy, arrested by police over a car hijacking and burglary were armed with a sword.
They are currently being questioned on suspicion of a variety of offences including hijacking, burglary, possession of an offensive weapon and breach of bail.
The men - aged 16, 23 and two aged 22 - were held after two women were forced from their car, a red Vauxhall Astra, at Pembroke Loop Road in Dunmurray by two men on Tuesday night.
Police have said one of the men was armed with a sword.
The car then made off before crashing into a police vehicle on the Stewartstown Road a short time later.
It then made off again.
Several hours later it was found in a field on the Carnaghliss Road in Crumlin. Officers recovered a sword from the hijacked vehicle.
The men were arrested in the area a short time later after reports of suspicious activity at a house.
Officers responding found that entry to the property had been forced.
All four remain in police custody.
Detectives investigating these incidents are appealing for witnesses and information. Call at Lisburn CID offices on 0845 600 8000 or Crimestoppers on 0800 555 111.