An Indian national working in a hotel in the southern coastal city of Eilat, near here, has strangulated his Israeli girlfriend to death alleging that she ‘‘betrayed’’ him.Kansal Sani, 23, called up the police an hour after killing his girlfriend Shlomit Elkobi on Friday and confessed to the murder. He told the police that an argument broke out between them over his suspicion that she ‘‘betrayed’’ him, which she denied, a media report said. During the noisy scuffle, he said that he caught Shlomit by her neck and held his grip till she was dead, the daily Ma’ariv said.The police chief said Kansal re-enacted the whole scene after police arrived.Kansal came to Israel in April last year from Mumbai and met Shlomit about a year back when she was staying at the luxury hotel as a guest. ‘‘A romance immediately sparked off between the two, which even led to the Israeli girl divorcing her husband to move in with Kansal in the same apartment,’’ said another Indian working in the city.Shlomit, from the northern town of Kiryat Bialik moved down to the south and also found work in a hotel to live with her new found love.The Indian, however, said the going was never easy between the two during the three months that they stayed together with frequent fights.