The Witchita, Kan., abortion clinic run by murdered doctor George Tiller will be closed permanently, the Tiller family announced Tuesday as Rep. Louise Slaughter, D-N.Y., offered a House resolution honoring the slain abortion provider.

Tiller opened the Women's Health Care Services, Inc., in the 1970s and it served as one of three clinics in the country that performed controversial second- and third-term abortions.

"Notice is being given today to all concerned that the Tiller family is ceasing operation of the clinic and any involvement by family members in any other similar clinic," Tiller family attorneys Lee Thompson and Dan Monnat said in a statement. 

"We are proud of the service and courage shown by our husband and father and know that women's health care needs have been met because of his dedication and service. That is a legacy that will never die. The family will honor Dr. Tiller's memory through private charitable activities," the attorneys said.

Tiller, who in March was acquitted on 19 misdemeanor charges related to his practice, was fatally shot while serving as an usher in his church on May 31. The murder drew a flood of denunciations from President Obama along with liberal and conservative lawmakers and abortion rights groups and abortion foes.

Attorney General Eric Holder ordered the U.S. Marshals' service to "increase security for a number of individuals and facilities" although officials provided no specifics.

Scott Roeder, 51, was taken into custody for the crime.

On Tuesday, Slaughter offered a resolution condemning Tiller's murder on behalf of 80 co-sponsors. The resolution noted the increased acts of violence taking place in places of worship, and called for condolences to the Tiller family and a recommitment to tolerance.