At least 11 people were killed and 219 injured in a fire at a residential complex of the Saudi Aramco oil company in Saudi Arabia's Al Khobar city, a media report said on Monday.Civil Defence spokesman Ali al Qahtani said on Twitter that some of the injured are in critical condition and that the victims were of various nationalities and worked for the Saudi Aramco oil giant.A massive fire broke out in the complex on Sunday.The complex is home to employees of the oil giant. An investigation has been launched into the incident.The civil defence authorities said the fire started in the basement of a tower in the complex.Saudi Aramco is the world's largest oil firm in terms of crude production and exports. It has more than 61,000 workers worldwide from 77 countries.Foreigners make up about a third of of Saudi Arabia's population of 30.8 million.