The Finnish police suspect an Estonian woman of killing her two infants last autumn in a small town north of Helsinki, commercial TV station MTV3 reported.
Investigator Tero Muurman said a preliminary investigation gave grounds for a charge of premeditated murder. The mother of the children denies responsibility.
Muurman added that the police have a "strong theory" regarding motive, painting a picture of a woman under severe economic and social stress. The woman's partner was originally also detained, but is no longer being eyed as a suspect in the case.
The police found the two dead infants in early October in Klaukkala while investigating an unrelated disappearance. One of the bodies of the children was found in a detached home, the other in the village center a few kilometers away.