A tourist visiting the Church of the Holy Sepulcher in Jerusalem was shot by a policeman and seriously wounded Friday night after allegedly threatening visitors with a knife and attempting to stab a police officer.Police said the incident began at closing time when two priests and a policeman walked among the visitors, asking them to leave. The man then allegedly drew a knife and threatened them. The policeman drew his sidearm and instructed the man to put down the knife. Other officers arrived on the scene and, when the man refused to lay down his weapon, sprayed pepper spray on him. The man then reportedly tried to run and was shot after threatening one of the policemen with his knife.