YANKS TO FLEE SUDAN

WASHINGTON Asserting that Libya appears to have been behind theshooting of a U.S. Embassy employee in Khartoum, Sudan, the Reaganadministration yesterday ordered the evacuation of all dependents andnonessential government personnel from the country.

The White House said as many as 500 people would be airliftedfrom Sudan, which recently has moved close to Moammar Khadafy'sregime in Libya. Pending their evacuation, the Americans wereadvised to remain at home.

The shooting Tuesday of the embassy employee, identified inreports as communications officer William J. Cokals, 33, and themurder of three British hostages in Lebanon heightened concern thatterrorist acts will multiply in the aftermath of this week's U.S. airraids on Libya.

Other incidents included discovery of a time bomb in luggagebeing carried aboard an El Al Airlines plane at Heathrow Airport inLondon yesterday, and explosion of two gasoline bombs at theresidence of U.S. Marine guards in Tunis, Tunisia, in which no onewas hurt.

Virulent anti-American demonstrations have erupted in Sudan,Egypt, Greece, Nigeria, Czechoslovakia, the Netherlands and Pakistan.The U.S. embassies in Khartoum and Lagos, Nigeria, were temporarilyclosed yesterday.

Despite rising anxiety, the administration steadfastly defendedthe U.S. raids as a proper response to Libyan-sponsored terrorism.President Reagan told reporters the slaying of the hostages inLebanon was "a tragedy," demonstrating that "terrorism is somethingthat we have to deal with, once and for all, all of us together" -the United States and its allies.

White House spokesman Larry Speakes said the air strikes wereordered after intelligence reports made it clear that Khadafy haddecided to escalate terrorist activities.

He said "our suspicions are very great that (the Khartoumshooting) was a Libyan-type operation."

The communications specialist was shot in the head while drivingout of the U.S. Embassy compound in Khartoum hours after the Libyaraid. One bullet pierced his brain, paralyzing his right side.

He was reported in stable but critical condition.

Of the hostage slayings in Lebanon, Speakes said, "We do notknow who is responsible but it bears the marks of the type ofactivity engaged in by Abu Nidal," an accused Palestinian terroristwith a base of operations in Libya.

The administration said it still was not certain about thewhereabouts of Khadafy.

Speakes said information indicated that shooting was continuingin Libya and that some elements of the army were "involved inmutinous type of activity."