Kim Kardashian, Taylor Swift and singer Demi Lovato have tweeted:
Just heard about the death of Cory Monteith. So sad. Prayers 4 his family. Praying 4 Lea too! Words cant describe what they must be feeling
Speechless. And for the worst reason.
More top news
Showers continue across some southern and western areas tonight.
Two people are being treated in hospital after an "explosion" in a flat in West Dunbartonshire.
Tom Billings, 22, went missing in Canada in December 2013 during an eight-week trip of North America.