This paper reports the most recent investigations on the detection of deep lying defects in nonmagnetic materials using Lorentz force eddy current testing (LET). Whereas classical eddy current testing techniques are limited due to the frequency dependent skin depth LET is expected to overcome this particular disadvantage by exploiting the induction of eddy currents by moving an electrical conductor in the vicinity of a permanent magnet. The detection of deep lying defects is examined at relatively high testing velocities and with high spatial resolution. Without target-oriented improvements defects in a depth of up to 6 mm under the surface can be detected and localized.