Ryan Phillippe was in the delivery room when actress Alexis Knapp gave birth to a baby that may be his, report says.
The 36-year-old actor and Knapp, 21, have not commented on the matter. She gave birth to a baby girl named Kai on Friday, People magazine reported on July 7, 2011.
The two dated in the summer of 2010. In March 2011, the magazine quoted a source close to the matter as saying: "Alexis has told friends that the child is Ryan's." Ryan is aware of the situation [and] totally prepared to take responsibility should the child be his."
Phillippe, known for movies such as "Cruel Intentions" and recently, "The Lincoln Lawyer," has two children with ex-wife Reese Witherspoon - daughter Ava, 11, and son Deacon, 7.
Knapp, who has appeared in films such as "Percy Jackson & the Olympians: The Lightning Thief" in 2010 and recently shot the movie "So Undercover" with Miley Cyrus, has no known older children.