dυ/σ_υ vs. R/R₅₀₀ diagram. Grey circles mark cluster galaxies, while the dotted line indicates their velocity dispersion. Stars mark the position of X-ray-detected AGN and the red colour indicates those that exhibit broad emission lines in their optical spectra. Filled squares denote the AGN velocity dispersion in three bins of equally divided number of sources. Open squares mark the respective median values. Close to the cluster cores, X-ray-detected AGNs tend to have higher velocities with respect to the cluster than the rest of the population. This trend may indicate the presense of infalling galaxies prior to their first pericenter passage. The average AGN velocity exhibits a declining trend toward the outskirts, mirroring that of cluster galaxies.