A marker delivery device includes an elongated delivery cannula which has a distal end section, an inner lumen and a discharge opening in the distal end section in communication with the inner lumen. A plunger is slidably disposed within the inner lumen of the elongated delivery cannula. The plunger has a distal end. At least one elongated fibrous marker body is pre-formed prior to being inserted into the inner lumen of the elongated delivery cannula. The at least one elongated fibrous marker body is slidably disposed within the inner lumen of the elongated delivery cannula at a location distal to the distal end of the plunger. The pre-formed at least one elongated fibrous marker body includes a fibrous material compressed and impregnated with a binding agent and freeze dried in the compressed condition. A releasable plug is disposed within a distal portion of the inner lumen and distal to the at least one elongated fibrous marker body.
