Speaking the Evening Standard, Catherine Seale urged parents to make sure their children check their privacy settings on Facebook.
The last thing I told him before I went away was 'don't have any parties'.
They could have been killed. Even though it had been cleaned up when I got back from France, everything felt sticky and dirty and it stunk.
There was vomit in the sitting room, cushions were completely ruined, and the sofa stank for days.
All parents should be warned that this could happen if you go away and leave your 17-year-old alone.
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Police were called to Kilburn High Road at 5.20pm after reports of a shooting.
In just 24 hours the offer was retweeted more than a thousand times on Twitter.
What a year it's been full of ups and down, turmoil and change and it seems events here in London have got the entire nation talking.