( CNN ) -- A car bomb exploded on a busy shopping street in the Northern Ireland town of Omagh 10 years ago Friday -- the single deadliest attack in the 30-year conflict between Roman Catholics and Protestants . A memorial has been built for the 29 people killed and 300 injured in the Omagh bombing . The blast killed 29 people , including a woman pregnant with twins , and wounded more than 300 . It occurred at the tail-end of the bloody period known as the Troubles , which lasted from the late 1960s to late 1990s . It was also four months after the signing of the Good Friday peace accord -- which ushered in a new era in the region despite the continuation of some fighting . The 500-pound bomb struck on a busy summer Saturday when people were out shopping on the main street in the market town . The attackers called in a bomb threat but gave police the wrong location for the bomb , leading authorities to evacuate people from the center of town to the end of the street , right where the bomb went off . Watch a family remember child killed in bombing » . Local authorities plan a 45-minute service Friday with prayers and singing to commemorate the anniversary . They plan a moment of silence at 3:10 p.m. ( 10:10 a.m . ET ) , the time the bomb exploded on August 15 , 1998 . `` All I can remember is going up . I went up and I came down and I hit something very , very hard , '' says Doreen Preston , who lost her right leg and two fingers of her right hand in the bombing . `` A soldier told me I hit the footpath . But as far as I was concerned , I thought I hit a telegraph pole 'cause all I could see was sparks and [ the ] smell of rubber . '' Preston was working at Watterson 's , a drapery and linen shop on the high street along with her best friend , Veda Short . They had worked together at the shop for 26 years , along with friends Geraldine Breslin and Anne McCombe . As police evacuated people from the area , the women were herded along with others to the spot where the bomb went off . Preston was the only one of the women to survive . `` I looked down and I could see Anne 's skirt , and I thought , 'Oh , poor Anne 's been injured , too , ' '' Preston said . `` I thought , 'Where 's the rest of the girls ? ' And they were n't -- I could n't see anybody . '' Preston spent more than four months in the hospital , at times so close to death that she planned the hymns for her own funeral , Preston said . She described anguish at learning her friends were killed . `` I miss them terribly , '' Preston said . `` Veda was like a sister to me . '' The Real IRA , a dissident republican paramilitary group , claimed responsibility for the bombing . The Real IRA opposed the peace plan , which had the cooperation of the mainstream IRA , or Irish Republican Army . Only one man , Colm Murphy , was ever convicted in the bombing , but his conviction for plotting the attack was overturned and a retrial is pending . A second man , Sean Hoey , was brought to trial , but a judge ruled last December there was not enough evidence to convict him . Families of the victims have said they are angry that so many people who must have had a part in the bombing -- from the scouts and plotters to the bombmakers -- are still free . Watch a survivor tell her story » . `` I think there is a lot more information , '' said Michael Gallagher , whose 19-year-old son Aiden was killed in the bombing . `` I think the intelligence services have not fully cooperated with the investigation . '' Survivors have waged their own fight to get over the physical and emotional scars from that day . `` My father said , and I do believe his words , there 's a time for you to be born into this world and a time for you to be taken out of it , '' said Preston , who has wondered why she was spared . `` That 's quite true , 'cause it 's [ been ] proved . 'Cause all those people round me were all taken and I was saved . But in saying that , it was a hard fight , a very hard fight . ''
Omagh bombing killed 29 people , including a woman pregnant with twins . The attackers called in a bomb threat but gave police the wrong location . Real IRA , a dissident republican paramilitary group , claimed responsibility .