Lakkhana said she and her husband thought the tourists wanted directions, so they stopped. Lakkhana said the passenger threw a punch, felling Somkhuan, who then tried to escape into the shabu shop. Lakkhana said doctors treating her husband had diagnosed a brain haemorrhage and ordered surgery to drain the blood. Pol Col Yutthana Sirisombat, chief of Borphut police station, said the two suspects had arrived from Hua Hin to tour Koh Samui. Police will seek permission from Samui Court on Tuesday to detain them pending further investigation before they are formally charged in court, he added.