A man accused of going on a wild shooting spree, killing his ex-girlfriend and injuring her mother and stepfather, is now in police custody, following last night's deadly attack.

The deceased, 22-year-old Trishana Sewell, her mother and stepfather, were allegedly attacked by Sewell's ex-boyfriend and an accomplice at their home in Fall Road, Seven Miles, Bull Bay, St Andrew.

According to reports from the police, about 9:50 p.m., Sewell and three other family members were at home when her ex-boyfriend and another man reportedly entered and opened fire at them before escaping.

Sewell, her 39-year-old mother and 34-year-old stepfather were taken to hospital, where Sewell was pronounced dead. The other relative escaped unhurt and Sewell's mother and stepfather have been admitted in serious but stable condition.

Sewell's ex-boyfriend was subsequently picked up in a nearby community and was being interrogated by the police. His alleged accomplice is still being sought.