Sheila Stewart, a broadcast journalist who was White House correspondent for Radio One and its online arm, Interactive One, and a news reporter for the syndicated “Tom Joyner Morning Show,” died Oct. 24 in Atlanta. She was 44.

A spokeswoman for the DeKalb County police in Georgia said Ms. Stewart was westbound on Interstate 20 east of Atlanta when, according to witnesses, her car came to a full stop for an unknown reason and was struck from behind by a truck. She was pronounced dead at a hospital in Atlanta. No one else was injured in the accident, which remains under investigation, the spokeswoman said.

Ms. Stewart, a former resident of Laurel, Md., had recently separated from her husband and was living with a sister in Ellenwood, Ga., according to the sister, Jacqueline Davis.

Sheila Leigh Stewart was a native of Great Falls, S.C., and a 1991 graduate of Benedict College in Columbia, S.C. After a variety of media jobs, she settled in the Washington area in 2005 to work for Radio One and spent a period as its news and community affairs director.

In 2008, Ms. Stewart began her White House reporting work. That job overlapped with her work for the Joyner show, which is syndicated by Radio One.

She wrote a motivational book, “Faith and the 3 P’s: Overcoming Obstacles with Prayer, Persistence & Positive Thinking,” published in 2001.

In 2007, she married the Rev. William Russell. Besides her husband, of Laurel, survivors include their son, Jonathan H. Russell of Ellenwood; her mother, Dorothy Stewart of Blackstock, S.C.; three brothers; and four sisters.

— Victoria St. Martin