An Israeli court Friday ordered an American couple extradited to the United States to face charges in the letter-bomb killing of a California woman.

Robert Manning, 39, and his wife Rochelle, 51, who live in the West Bank Jewish settlement of Kiryat Arba, have been in an Israeli jail since March, seven months after the Justice Department requested their extradition.They are suspects in the death of Patricia Wilkerson, who was killed in 1980 when she opened a letter bomb addressed to her at the computer firm in Manhattan Beach, Calif., where she worked.

A District Court judge ordered the extradition process to proceed but said the Mannings could appeal to the Supreme Court.

The Mannings' children have been holding a vigil outside Prime Minister Yitzhak Shamir's residence for weeks, asking that their parents not be extradited.

State-run Israel Radio quoted Robert Manning as saying that his extradition was tantamount to a death sentence.