Liverpool manager Juergen Klopp went to hospital after feeling unwell and missed Wednesday's training session, the Premier League club said.
"Juergen Klopp has attended a hospital appointment today as a precautionary measure, after feeling ill," the club said in a statement.
"He is being assessed by doctors and will be absent from training on Wednesday as a result."
No details were given about Klopp's illness but the club confirmed the 50-year-old German is expected to be released on Wednesday evening and may require further check-ups.
Liverpool host Southampton in the Premier League on Saturday.
