failed to stop at a police checkpoint. Following a car chase the bombers escaped across the Irish border, and the Irish Army carried out a controlled explosion on the bomb after the van was found abandoned in County Donegal. On 13 September 2000, two 80 lb bombs were planted at the Magilligan army camp in County Londonderry, one of which was planted in a wooden hut and partially exploded when a soldier opened the door to the hut. The second bomb was found during a follow-up search and made safe by bomb disposal experts. On 11 November the RUC and British Army prevented a mortar attack after stopping a van near Derrylin, County Fermanagh, and the RUC prevented a further attack on 13 January 2001 when an 1100 lb bomb was found in Armagh – the largest bomb found in several years according to the RUC. On 23 January the RIRA attacked Ebrington Army Barracks in Derry for a second time, firing a mortar over a perimeter fence. A mortar similar to the one used in the attack was found by Gardaí near Newtowncunningham on 13 February, and British army bomb disposal experts made safe another mortar found between Dungannon and Carrickmore on 12 April. On 1 August a 40 lb bomb was discovered in a car at the long-stay car park of Belfast International Airport following a telephone warning, and was made safe with two controlled explosions by bomb disposal experts. In December a six-day security operation ended when a 70 lb bomb found under railway tracks at Killeen Bridge near Newry was defused. The operation began following telephone warnings, and the road and railway line connecting Newry to Dundalk were closed due to security alerts. A pipe bomb was discovered at a police officer's home in Annalong, County Down on 3 January 2002, and two teenage boys were injured in County Armagh on 2 March when a bomb hidden in a traffic cone exploded. On 29 March 2002 the RIRA targeted a former member of the Royal Irish Regiment from Sion Mills, County Tyrone, with a bomb attached to his car that failed to explode. On 1 August 2002 a civilian worker was killed by an explosion at a Territorial Army base in Derry. The man, a 51-year-old former member of the Ulster Defence Regiment, was the thirtieth person killed by the RIRA. Arrests Despite the RIRA's renewed