Aston Villa manager Gerard Houllier has been admitted to hospital, the club has confirmed.
The 63-year-old was taken to hospital in Birmingham overnight.
Houllier had major surgery after suffering heart-related problems in 2001, whilst manager of Liverpool FC.
He arrived at Villa Park in September to succeed Martin O'Neill.
When he took the position Houllier revealed he had consulted his heart surgeon before accepting the job.
He said he had returned to speak to Dr Abbas Rashid, the man who led the team who performed his 11-hour operation, and was given a clean bill of health.
"When you go into a job you know there will be pressure, that it will be hard work and you won't sleep every night," he said at the time.
"You need to make sure your body is ready. I have checked that. I am much healthier and fitter now than I was before."
More here -
http://www.bbc.co.uk/news/uk-england-13154952