Pair charged with hijack attempts in Londonderry 26 August 2013 Last updated at 12:17 A man and woman have appeared at a special sitting of Londonderry Magistrate's Court charged with attempting to hijack two cars on Saturday. Hannah Kerrigan, 24, and Liam McCavana, 18, both of no fixed abode, were charged with attempting to hijack a BMW and a Vauxhall Vectra. Both were also charged with assaulting police. The PSNI helicopter was deployed during the operation on Saturday. The cars were parked in the Trench Road and Hollymount areas of Derry. Mr McCavana, of no fixed abode in Belfast, was charged with assaulting two police officers. Ms Kerrigan, of no fixed abode in Derry, was also charged with possessing two knives and with assaulting a police officer. There was no bail application granted and both defendants were remanded in custody for a video link hearing on 12 September. Two other people, an 18-year-old woman and 23-year-old man who were arrested during the same police operation, have been released on police bail pending further enquires.