Matt Damon had to pull out of a fundraiser because of a “family emergency of a serious nature.”

The Bourne Ultimatum star was due to host an event for OneXOne - a charity which aims to improve the health and wellbeing of impoverished children around the world - in San Francisco last night, but instead had to return to his home in Boston yesterday evening. It was at this same event that Charlize Theron kissed a woman for $140,000.

Representatives for the 39-year-old actor have revealed the emergency didn’t involve any of his children—Isabella, 3, and 14-month-old Gia Zavala - with wife Luciana .