The son of Nigeria's top diplomat in Hong Kong yesterday was jailed for two years after a judge said he was 'looking for trouble' by arming himself with a stun gun in the Wan Chai bar area. District Court judge Fergal Sweeney acknowledged guns were on public sale in some countries but said there were strong deterrents against them in Hong Kong, which did not have a gun culture. Student Oluwaseni Olusanmokun, 21, pleaded guilty last Wednesday to possessing a stun gun without a licence but denied wounding police chief inspector Michael Armstrong. He was convicted last Friday. Judge Sweeney said that according to Chief Inspector Armstrong's evidence he suffered more injuries from the accused's first blow to his head with a bottle than when later struck by the stun gun. 'The electric shock led to no residual marks, burns or any lasting effects on the first prosecution witness [Chief Inspector Armstrong] . . . [but] the attack on the victim's head which caused a deep laceration that needed seven stitches was undoubtedly serious,' Judge Sweeney said. Barrister James Chandler, for Olusanmokun, told the court the conviction had 'totally disrupted' the accused's studies at the Canadian International School. The defendant felt remorseful for what he had done, which he thought had brought shame to his family. The judge imposed an 18-month sentence for the wounding charge and 16 months for the arms possession charge, six of which are to run consecutively to the 18-month term. The sentence applies from May 15 this year, the day Olusanmokun was remanded in custody. Olusanmokun's father, Nigerian Consul-General Ebenezer Olusanmokun, did not attend court yesterday and declined to comment. The judge found Olusanmokun hit Chief Inspector Armstrong on the head with a glass bottle outside the Devil's Advocate Bar in Wan Chai early on February 3 when the police officer warned him not to get into trouble with a group of men he was arguing with. The defence had argued that the police officer provoked the fight by calling Olusanmokun a 'nigger' and Olusanmokun had acted in self-defence. The judge describe this on Friday as 'inherently incredible'.