Fraction of cluster galaxies () hosting an X-ray AGN (L_{X[0.5 − 10 keV]} > 10⁴² erg s⁻¹). The results are plotted as a function of distance from the cluster centre. The sample is divided in two based on cluster mass. Error bars indicate the 1σ confidence limits for small numbers of events (Gehrels 1986). For comparison, we plot results from the analysis of massive clusters by Koulouridis et al. (2018, namely: 167 clusters, 0.1 < z < 0.5). A significant AGN excess is found at the 95% confidence level only in the outskirts of low mass clusters (M < 10¹⁴ M_⊙).