CANBERRA (Reuters) - Australian police charged four more men on Wednesday with planning to attack an army base and shoot soldiers as the government considered whether to ban a Somalia militant group linked to the plot. During a brief court hearing in Melbourne on Wednesday, one of those charged refused to stand before the court and then shouted at the presiding magistrate. You call me a terrorist? I have never killed a person in my life, said Wissam Mahmoud Fattal, 33, before he was led to a jail cell. Your army kills innocent people in Iraq and Afghanistan and Israel takes Palestinian land by force, he said. A total of five men have been charged with terrorism offences. All have been remanded in jail to reappear in the Melbourne Magistrates Court in Oct 26. The five, all Australian citizens with Somali and Lebanese backgrounds, were arrested in a series of police raids on Tuesday across Melbourne, Australias second-largest city, after a seven-month investigation. Police said they had links to the Al Qaeda-linked group, Al-Shabaab, in Somalia and had planned a commando-style attack to kill soldiers on a Sydney army base. Prosecutors told the Melbourne Magistrates Court on Tuesday they had evidence some of the men had taken part in training in Somalia and at least one had engaged in frontline fighting in Somalia. Western officials worry that todays chaotic Somalia resembles Afghanistan in the 1990s, when fighters, including Osama bin Ladens associates, used the safe haven of ungoverned areas on the Pakistan border to plan attacks on Western targets. While the US has labelled Al-Shabaab a terrorist organisation, the group is not banned under Australian terrorism laws. Foreign Minister Stephen Smith said the government would review that. Were dealing with a very serious situation here, Smith told Sky television. Were dealing here with an international phenomenon. Prime Minister Kevin Rudd said the government would consider expert advice on whether to proscribe Al-Shabaab, but he would not debate the merits of any ban publicly. Lawyers who have acted in previous terrorism trials in Australia said the fact Al-Shabaab was not banned in Australia would complicate the prosecution case. If a group is proscribed, you can be charged automatically. If it is not proscribed, you have to prove that the organisation is a terrorist organisation, barrister Greg Barnes told the Australian newspaper. Rudd said the government had ordered a review of security at all military bases following the arrests, even though Australian Defence Force Commander Angus Houston had said arrangements were adequate.