DETROIT, May 10 /PRNewswire-FirstCall/ -- Comerica Bank announced it will increase its prime rate to 8.00 percent from 7.75 percent effective today, May 10, 2006.

(Logo: http://www.newscom.com/cgi-bin/prnh/20010807/CMALOGO )

Comerica Bank is a subsidiary of Comerica Incorporated (NYSE: CMA), a financial services company headquartered in Detroit, strategically aligned by three business segments: The Business Bank, The Retail Bank, and Wealth & Institutional Management. Comerica's approximately 10,700 employees focus on relationships, and helping people and businesses be successful. Comerica Bank locations can be found in Michigan, California, Texas, Arizona and Florida, with select businesses operating in several other states, Canada and Mexico. Comerica reported total assets of $56.4 billion at March 31, 2006. To receive e-mail alerts of breaking Comerica news, go to http://www.comerica.com/newsalerts .

SOURCE: Comerica Bank

CONTACT: Media Contact: Wayne Mielke, +1-313-222-4732, or Investor
Contact: Paul Jaremski, +1-313-222-6317, both of Comerica Bank

Web site: http://www.comerica.com/