Elton John has reportedly become a father for the second time.

The "Rocket Man" singer and his husband David Furnish - who already have a two-year-old son, Zachary, together - are thought to have welcomed another child into the world via a surrogate. According to the New York Post, the couple used the same California-based surrogate who gave birth to Zachary on Christmas Day 2010.

No further details about the birth or the baby have been revealed.

Last November, it was revealed Elton and David were expecting their second child but had decided never to reveal the identity of the surrogate. "Elton and David love this lady like a sister and they feel indebted to her for life. Naturally she has been well rewarded. But her identity will never be revealed. They are over the moon," a source said.