A method, by a policy control unit of a mobile communications network, to control a signalling of congestion information of mobile entities at a plurality of congestion monitoring units that monitor which mobile entities are affected by a congestion state in a radio access network of the mobile communications network. The method comprises receiving, from one of the congestion monitoring units, an indication that one of the mobile entities is affected by a congestion, storing said one congestion monitoring unit from which the indication is received as the current congestion monitoring unit for said one mobile entity, receiving, from another congestion monitoring unit, the indication that said one mobile entity is affected by a congestion, and indicating, in response to the indication received from the other monitoring unit, to the current congestion monitoring unit a release of congestion information relating to said one mobile entity.