A spokesman for Gibson confirmed to the celebrity magazine that Gibson and Grigorieva had celebrated the birth of their first child together last Friday, a girl who has been named Lucia.

“This will confirm that Oksana Grigorieva and Mel Gibson welcomed the arrival of a baby girl named Lucia on Friday, October 30, 2009, at an undisclosed hospital in Los Angeles,” Gibson’s spokesman told People.

No further details were available.

Gibson, 53, has seven children with Robyn Gibson, his wife of nearly 30 years who filed for divorce from the Oscar-winning actor-director in April.

Gibson confirmed that he and Grigorieva were expecting their first child together during an appearance on Jay Leno’s “The Tonight Show” in May.

“I guess I’m Octo-Mel,” Gibson joked at the time.

According to court documents, Gibson separated from his wife in August 2006, less than a month after his infamous drunk-driving arrest in Malibu.

Since 2006 Gibson has kept a low profile, appearing in a handful of cameo roles in television and films. His last film as a director was the 2006 Mayan period epic “Apocalypto.”

His last major role as an actor was in the 2002 film “Signs” but he is currently working on “The Beaver” alongside Jodie Foster.

The film, which is directed by and co-stars Jodie Foster, is about “a guy walking around with a puppet of a beaver on his hand who treats it like a living creature.”

As for his personal life, Mel is currently expecting a child with girlfriend Oksana Grigorieva – though the two have no plans to tie the knot at the current time.

Oksana recently told press: “We have no plans to marry whatsoever. I haven’t thought about it. How could one not be impressed with such an intimate connection with the miracle of life? It’s beautiful, children are beautiful.”