Muslim-American congresswoman Ilhan Omar attacked with unknown liquid in Minneapolis

WhatsApp to introduce new feature to block messages from unknown numbers

Azam Swati claims private video of him, wife sent to family from 'unknown number'

NASA says ‘mystery’ rocket from unknown origin crashes into moon

Quetta: Unknown persons firing martyred three Levies personnel

Quetta: Police mobile comes under terrorist attack, 1 martyred, 1 injured

FIR registered against unknown assailants in cameraman killing case