Hybrid morphology radio sources - follow-up VLBA observations

Hybrid sources that present FR I - like jet on the one side of the radio core and FR II - like on the other are rare class of objects that may posses key to understanding the origin of FR division. We presents information connected with the new high resolution VLBA follow-up observations of 5 recently discovered hybrid sources. We believe that sources which exhibit two different morphologies at the opposite side of the radio core are FR II type objects evolving in non-uniform high-density environment.