MADISON, Wis. -

A nonprofit group has delayed a final decision on whether to add the name of a fallen Wisconsin police officer to its Washington, D.C., memorial.

The board of directors of the National Law Enforcement Officers Memorial Fund met Thursday and decided to reconsider an earlier decision by its names committee not to include Wauwatosa police Officer Jennifer Sebena's name on its memorial.

In a statement, chairman and CEO Craig W. Floyd says the memorial fund is "very sensitive to the unique circumstances" of Sebena's death and believes more research is warranted. Floyd said a final decision will be made by early 2014.

The Wisconsin Professional Police Association said it's frustrated by the memorial's delay.

Gov. Scott Walker has joined those calling for Jennifer Sebena's name to be included in the memorial.

Walker sent a letter Thursday to the chairman and CEO of the National Law Enforcement Officers Memorial Fund. He asked the group to list Sebena's name on its memorial.

In his letter, Walker said Sebena was protecting the citizens of Wauwatosa when she was ambushed Dec. 24 and gunned down.

Sebena's husband, Benjamin Sebena, 30, is charged with first-degree intentional homicide in her death. He's pleaded not guilty by reason of insanity.

Walker says it shouldn't matter who committed the homicide, "since the act was taken against a police officer on duty."