CHUR, Switzerland (AP) _ Police today spotted the suspected slayer of Liechtenstein's chief detective and fatally shot him when he refused to surrender, authorities said.

Police said Reinhard Menches, a 32-year-old West German national, was sighted by a patrol near the town of Landquart, only a few miles from the border with the principality of Liechtenstein.

They said officers opened fire when Menches failed to stop despite three shouted warnings and tried to escape. He died a few hours later in the Chur hospital.

Heinz Hassler, 51, chief of Liechtenstein's criminal police, was killed by gunfire Tuesday when he and other officers tried to arrest Menches on suspicion of committing a rape in Vaduz, capital of the principality.

Police said Menches fired without warning, fatally wounding Hassler, and then fled.