Sniffer dog searches and X-ray machines spark religious objections from London's Muslims Improved security checks on London's public transport system have put the police on collision course with Muslims over fears they are at odds with the religion. Extra sniffer dogs and X-ray machines for screening bags have given to the British Transport Police who patrol the Tube and the rail system in an effort to prevent terror attacks. But some Muslims have complained that being searched by dogs is against their faith because dogs are "spiritually unclean". And some female Muslims have complained that X-ray machines are unacceptable because it was the same as being forced to strip. During trials of the new resources in the capital, passengers had the exterior of their luggage checked by dogs. But one Asian man told researchers: I don't mind dogs in the park or walking near me, but sniffer dogs? I don' think that's right."A Muslim woman, asked to walk through a scanner, also complained saying: "Sometimes I wear clothing which is not so tight. It will be shown on (the monitor) and somebody is looking at it. It defeats the whole purpose of covering up." But a BTP spokesman said that the security checks would continue but officers would be considerate. He said: "We are obviously aware of and sensitive to any cultural sensitivities. BTP officers do have the power to stop and search anyone under the Terrorism Act. "This also covers use of the dog handlers and dogs, which are used to 'indicate' any substance they have been trained to detect."