President F.W. de Klerk urged political leaders Monday to accept responsibility for ending township violence after weekend clashes killed 45 people.

The dead included 22 people slain in Soweto after a funeral Sunday for a township official, and 21 people killed in Alexandra, in northern Johannesburg. Schools there were closed Monday amid fears of more violence."We can't go on like this," de Klerk told Parliament in Cape Town.

"We must bring an end to it (the violence), and accept co-responsibility," he said, repeating his invitation for political, church and academic leaders to attend a peace conference May 24-25.

He said battles that have killed thousands of blacks were the result of apartheid policies that suppressed the black majority and made violence a part of life.