A brother and sister from Birmingham arrested under anti-terror laws have been freed on police bail pending further inquiries.
The 23-year-old man and his sister, 18, were detained at their home in the Small Heath area of Birmingham on suspicion of possessing documents likely to be of use to someone committing or preparing an act of terrorism.
Police said that the arrests were pre-planned and had not been made in response to any threat to public safety.
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Today's crash is the most serious incident involving The Smiler roller coaster, which has been beset with problems since opening in 2013.
Four people are seriously hurt after two roller coaster carriages crashed into each other on The Smiler ride at Alton Towers.
It's been a wet and windy start to the meteorological summer, but exactly 40 years ago the situation was much worse!