3 sisters who carried out the attack on their sister's lover sentenced to 5 years and 4 months, their brother 6 years for having a weapon.
2 sisters not part of the attack but who supported it, sentenced to 3 years 6 months.
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Anthony Cavanagh was assaulted during a night out with friends whilst on home leave from the Royal Navy in 2005.
At around 12.45am on Friday September 22, police were called to reports of a sexual assault on Hague Road.