A 27-year-old bicyclist has been charged with disobeying a traffic device after police said he fatally struck a woman who was trying to cross a street at Franklin Square in Northwest Washington.

Zakkai Stanley Kauffman-Rogoff of Northwest Washington was issued a citation, said Aquita Brown, a spokeswoman for D.C. police. Brown said in a statement that “the investigation is still ongoing, and [police are] working with the United States Attorney’s Office to determine if any additional charges may apply.”

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Kauffman-Rogoff’s attorney, David Benowitz, said that his client “denies culpability in this unfortunate event, and that he has cooperated and will continue to cooperate with the investigation.”

The woman, Jane Bennett Clark, 65, had been an editor and writer at Kiplinger magazine, overseeing articles on personal finance and retirement planning for the business periodical. She started working there in 1977.

Clark had left her office near 13th and K streets NW about 6:30 p.m. March 9 and was walking south to the Metro Center station, headed to her home in Takoma Park, Md. At I Street, police said, she stepped off a curb and was struck by a bicyclist traveling south on 13th Street. The bicyclist stopped after the collision. Clark died the following day.