Shia rebels in northern Yemen say Saudi Arabia has carried out more bombing raids targeting several villages along the border. <br/> <br/>The rebels say Saudi planes also struck a mountainous area more than 10 kilometres inside Yemeni territory. There is no report of any casualties from the raids. <br/> <br/>Earlier this week, the Saudi authorities said they would keep bombing northern Yemen until the rebels had pulled back from the border. <br/> <br/>According to a statement by U.N children's fund, Unicef, Saudi Arabia has evacuated 240 villages because of the fighting. The U.N also said more than 50 schools had been closed because of the fighting and that there was a deep concern about the escalation of the conflict. <br/><br/>