The Marriott is a popular place for foreigners to stay and a prominent enterprise in the city, despite a wave of violence the country suffers. The hotel had been victim of another attack in January 2007 where a security guard was killed and several people injured after the guard blocked a bomber from getting at the hotel, forcing him to detonate his explosives where he was.
Can we infer the following?
The security guard tried to warn the hotel
It's impossible to say