Orville G. Ausen, 75, a retired FBI agent, died Monday of pneumonia at Howard County General Hospital in Columbia.
A mass of Christian burial was being offered today at St. John the Evangelist Church in the Meeting House of the Oakland Mills Interfaith Center in Columbia.
Mr. Ausen, who lived on Winter Rose Path in Columbia, retired in 1970 from FBI headquarters in Washington after working there and at the local FBI office in the district since 1954.
He came to this area in 1951 and worked in the FBI's Baltimore office and in Dover, Del., until moving to Washington.
Earlier, Mr. Ausen was an agent or clerk at FBI offices in Detroit, Oklahoma City and Sioux Falls, S.D.
During World War II, he served with the Navy in the Philippines.
Born in Jasper, Minn., and reared in Sioux Falls, he graduated from the Nettleton Business College in Sioux Falls and the Oklahoma City School of Law.
After leaving the FBI, he served as a consultant to government agencies and as an investigator for the Calvert County state's attorney.
Survivors include his wife of more than 50 years, the former Marguerite Schubert; two daughters, Kay Dickson of Fairfax, Va., and Lynn Donaldson of Ellicott City; a sister, Wilma Maddex of St. Joseph, Mo.; seven grandchildren; and a great-grandson.