(VOVworld) - Six Canadian humanitarian workers, including a family of 4, from Quebec, were among those killed in an attack by IS on the Splendid Hotel in Burkina Faso's capital, Ouagadougou. 28 people of 18 nationalities were killed and 56 others were wounded before a 15-hour siege ended Saturday night. The attackers had detonated two car bombs outside the hotel before 6 gunmen entered the hotel and held more than 100 people hostage. The attack and later gun battle between the attackers and police lasted 12 hours. The Al Qaeda in the Islamic Maghreb (AQIM) has claimed responsibility for the attack.