FBI and Daniel Pearl video

I`m puzzled. First a couple of quotes, with sources below:

The FBI has ordered an internet provider to stop hosting a video showing US journalist Daniel Pearl being murdered.<

http://www.ananova.com/news/story/sm_594707.html?menu=news.latestheadline

Special agent Sandra Carroll of the FBI’s field office in Newark, N.J. said an FBI agent may have passed along information that the Pearl family was ``looking at what legal remedies that they may have,’’ including obscenity laws. But she said there is no legal prohibition against showing the video.<

http://www.bayarea.com/mld/mercurynews/3337225.htm
Whats going on here? If showing the tape is not illegal, how do the FBI have any authority to order sites not to show it? The morality of showing it is a completely different question, its the legal part that I don`t understand.

I imagine the FBI has all sorts of ways to make one’s life difficult without things ever appearing before a judge.

From the text of the article it seems that the ISP in question voluntarily removed the video. The journalist likely doesn’t understand the difference between “order” and “request.”