I don't know how the legal system works in Qatar, but think that they are capable of taking and matching DNA evidence.
It may be a little too late for this case, but if this or something similar should happen again, it's best to get the police down straight away to collect DNA evidence wherever and whenever possible.
This also goes for women that may have been raped. Go straight to the hospital and get checked out and also get them to collect DNA.
These people need to be locked up for the safety of the general public and any part that you can play to help this may prevent other attacks on the innocent people.
I don't know how the legal system works in Qatar, but think that they are capable of taking and matching DNA evidence.
It may be a little too late for this case, but if this or something similar should happen again, it's best to get the police down straight away to collect DNA evidence wherever and whenever possible.
This also goes for women that may have been raped. Go straight to the hospital and get checked out and also get them to collect DNA.
These people need to be locked up for the safety of the general public and any part that you can play to help this may prevent other attacks on the innocent people.
Please be careful and vigilant.