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After the fall of the Soviet Union it continued to operate as a centre of weapons production , On March 28 , 2011 , an explosion occurred , killing some 150 people and injuring many more , a day after around 30 armed al-Qaeda militants raided the " 7th of October " ammunition plant , stealing cases of ammunition and leaving gunpowder exposed at the site ; militants took over another nearby munitions factory in Khanfar .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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