ISLAMABAD (Agencies) - At least six persons, including two women suffered injuries when a blast ripped through the top floor of Citi Hotel in Blue Area here on late Thursday night. The injured were shifted to Pakistan Institute of Paramedical Sciences (PIMS) for necessary treatment. Talking to media Inspector General (IG) of Islamabad Police Binyamin said there were little chances that the blast was the result of any terrorist activity. The real cause of the blast is not ascertained yet, but apparently it looks that it took place due to gas leakage, he said.