Nigerian police , soldiers accused of killing 133 during riots in November 2014 . U.S.-based Human Rights Watch says main victims were young Muslim men . Witnesses say police units summarily executed unarmed men and boys . In the report , released Monday , Human Rights Watch says it `` documented 133 of these killings but believes that the actual number of arbitrary killings by security forces may be substantially higher than these figures . '' It says death toll could be ` ` substantially higher '' than the cases suggest .
Nigerian police , soldiers accused of killing 133 during riots in November 2014 . U.S.-based Human Rights Watch says main victims were young Muslim men . Witnesses say police units summarily executed unarmed men and boys . It says death toll could be ` ` substantially higher '' than the cases suggest .