THE RIGGS BANK N.A. 401(K) PLAN
 

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 15

CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number 000-09756

THE RIGGS BANK N.A. 401(K) PLAN

(formerly The Riggs National Bank Employees’ Savings Plan)
(Exact name of registrant as specified in its charter)

One PNC Plaza
249 Fifth Avenue
Pittsburgh, Pennsylvania 15222-2707
(412) 762-2000
(Address, including zip code, and telephone number, including area
code, of registrant’s principal executive offices)

The Riggs Bank N.A. 401(k) Plan (“Plan”) interests
for which Form 11-K previously filed
(Title of each class of securities covered by this Form)

None
(Titles of all other classes of securities for which a duty to file reports under Section 13(a) or 15(d) remains)

     Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

                     
  Rule 12g-4(a)(1)(i)   x       Rule 12h-3(b)(l)(i)   x
  Rule 12g-4(a)(1)(ii)   o       Rule 12h-3(b)(l)(ii)   o
  Rule 12g-4(a)(2)(i)   o       Rule 12h-3(b)(2)(i)   o
  Rule 12g-4(a)(2)(ii)   o       Rule 12h-3(b)(2)(ii)   o
              Rule 15d-6   o

     Approximate number of holders of record as of the certification or notice date: None

     (Plan merged into The PNC Financial Services Group, Inc. Incentive Savings Plan on June 14, 2005)

     Pursuant to the requirements of the Securities Exchange Act of 1934, The PNC Financial Services Group, Inc. Incentive Savings Plan, as successor to The Riggs Bank N.A. 401(k) Plan, has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

           
Date: June 15, 2005   THE PNC FINANCIAL SERVICES GROUP, INC.
INCENTIVE SAVINGS PLAN, AS SUCCESSOR TO
THE RIGGS BANK N.A. 401(K) PLAN
     
  By:   /s/ James S. Gehlke
       
      James S. Gehlke
Plan Manager/Administrator