It was another long day on the Boston,MA set of Wichita today (October 23) for actress Cameron Diaz.

After spending the morning filming a series of solo scenes, the 37-year-old star was seen getting escorted to a police car by plain-clothed officers.

Meanwhile, Cammy has dismissed reports of being banned from using social networking site Twittek by Shrek movie bosses.

Despite a report suggesting that Hollywood bosses are keen to clamp down on stars using the website, amid fears that they will reveal important details about their upcoming film projects, reps for Miss Diaz insist the news is not true.