A Calvert County woman has been charged with attempted poisoning for allegedly sending 11 packages containing fruit drinks mixed with an "unknown substance" to her former supervisors and fellow employees, Maryland State Police said. No injuries were reported.

Lorraine B. Gray, 37, of Lusby, was arrested Sunday and charged with sending the packages to the Calvert Diversified Services office, which is the headquarters of the Association of Retarded Citizens of Southern Maryland, and to the Sandy Point Group home it runs. Both are in Prince Frederick. A Calvert County District Court commissioner released her on a $10,000 property bond.

On Saturday, employees at the group home contacted state police about two suspicious envelopes that were delivered anonymously. Each contained a bottle of fruit drink and a note, police said.

Two state troopers who examined the packages complained of nausea and headaches and were treated at Calvert Memorial Hospital and released, police said.

Police discovered that nine other packages had been delivered to association employees since Aug. 20. All the packages were turned over to the state police environmental crimes unit and the police crime laboratory.

None of the recipients of the packages appeared to have drunk the fruit drinks.

Police said they found packaging material, a bottle labeled "Drano," rubber gloves and other "evidentiary items" in Gray's car.

Gray, who turned herself in to investigators, was charged with 11 counts of attempted poisoning, seven counts of contaminating/poisoning food/drink, seven counts of attempted first-degree assault and two counts of first-degree assault.