The wife of Ukraine's military spy agency chief is receiving medical treatment after apparently being poisoned by heavy metals. Local media outlets say the poisoning may have been an attempt on her life.

Marianna Budanova is married to Kyrylo Budanov, who heads the intelligence agency under the defense ministry. Russia's security agency has accused Budanov of playing a central role in planning clandestine operations against Russian targets.

Budanova's condition is said to be improving.

Ukrainian media quote sources as saying that the heavy metals were likely administered through food. Some media report the substances are not used in everyday life.

The BBC reports that several members of the agency also had "mild symptoms of poisoning."