The German and U.S. justice ministers signed an agreement that formalizes an already active cooperation in rooting out suspected terrorists. The contract, signed by German Justice Minister Brigitte Zypries and Attorney General John Ashcroft in Washington on Tuesday, allows law enforcement officials to seize evidence, question prisoners and search for suspects together. Zypries said the agreement made already fluid cooperation between the two countries "even more effective." Police cooperation between the two countries has intensified and deepened since the Sept. 11 terrorist attacks. Justice officials said differences over cooperation in cases where the suspect in the U.S. is facing the death penalty, were respected and left untouched by the new contract.