Kaylan Soto, a sensei with 30 years' Ninjutsu training, and three of his students raced out of the dojo towards the startled attackers. All five crusaders were clad in the ninja's traditional, all black uniform.
Mr Soto said it took the three assailants a few moments to realise what was going on. When they did, they shot off. ''You should have seen their faces when they saw us in ninja gear coming towards them,'' he said.
As for the ninjas, they were back in training last night.