  We examine the correlation between compact radio quasars (redshifts in the
range $z = 0.3 - 2.2$) and the arrival direction of ultrahigh energy cosmic
rays forming clusters. Our Monte Carlo simulation reveals a statistically
significant correlation on the AGASA sample: the chance probability of this
effect being less than 1%. The implications of this result on the origin of
ultrahigh energy cosmic rays are discussed.
