Mysteries in Qatar

Last week a tyre ripper attacked in Qatar .He slashed hundreds of cars then the coming night he smashed around ten car's windows .
He was caught - an American citizen -wanting to take revenge on one single motorist - but not quite sure about the car vandalised so many vehicles in two areas .
The other thing is the color of the sea which turned murky in the area of the Corniche .Was it caused by pollution or ground water ? It is not known yet .