Amy Winehouse after fainting Monday at her north London home, was hospitalized and at doctors decision remained in hospital on Tuesday for more tests, reveals Reuters.

Speaking to the same source her spokesman said "She's staying there for the time being," he added "They are still not quite sure what happened and the tests were inconclusive."

Remember that Amy last time behaviour and moments are not so pleasant and for a time the star also entered a rehabilitation clinic in January.

Even if Winehouse is expected to perform as planned at a Nelson Mandela birthday concert in London's Hyde Park on June 27.