belonging to the al shabaab organization gunning down students and taking hostages. 15 confirmed dead. dozens injured. latest count, more than 500 students are unaccounted for. witnesses say they were specifically targeting christians. the gunmen are now believed to be trapped in one of the dorms. a short time ago kenya s president read a statement to his country. this is a moment for everyone throughout the country to be vigilant as we confront and defeat our enemies. i want to bring in kobe kobias following this live from tenia. reporter: we re having trouble getting details on the story, jose. we still don t know how many hostages are being held in that one dormitory on the university campus. we don t know how many gunmen are involved. we don t know specifically how