Mark Zuckerberg marries

Facebook chief Mark Zuckerberg has married his long-term girlfriend Priscilla Chan.

Zuckerberg and 27-year-old Chan tied the knot at a small ceremony attended by less than 100 people at his home in Palo Alto, California, according to a guest who had been given permission to speak to the press.

She graduated from the University of California medical school in San Francisco on Monday, the same day Zuckerberg turned 28.

The couple met at Harvard and have been together for more than nine years.