ROCKFORD, Ill. (AP) -- A man already accused of killing a high school friend now is charged in a second northern Illinois killing.

Prosecutors in Illinois' Lee County on Tuesday filed 12 murder counts against 36-year-old Terence Doddy of Rockford in the July 1 death of 44-year-old Tonya Bargman. Other charges include robbery, concealment of a homicidal death, and possession of a stolen motor vehicle and credit card.

Doddy is accused of asphyxiating Bargman at a rest stop at Paw Paw along Interstate 39 before stealing the Monticello woman's car. Doddy already was charged in Winnebago County in the June 30 killing of 37-year-old Todd Hansmeier.

Doddy was arrested July 4 after a chase near Beloit.

Doddy has pleaded not guilty in Winnebago County and is to be arraigned Wednesday in Lee County.