(CNN) -- Authorities say a Maryland woman suffocated her two kids, 1 and 3 years old, and then told a relative what she'd done. Prince George's County police accused 24-year-old Sonya Katarina Spoon of suffocating 1-year-old Ayden Spoon and 3-year-old Kayla Thompson over the weekend. The children died at a hospital, authorities say. Police say they found plastic bags near both of the kids. Spoon gave police a detailed statement on how the children died, according to police. She is charged with two counts of first-degree murder and is being held without bail pending a court appearance, according to authorities. Spoon has been dealing with a stressful custody issue and has been "under extreme psychological and mental distress," said her mother, Paivi Spoon. Arizona mother admits to killing daughter, poisoning other kids, police say . S.C. mother pleads guilty to murder of 2 sons .
Maryland mother is accused of suffocating her two children, aged 1 and 3 . Police found plastic bags near the kids' bodies . Their mother, Sonya Katarina Spoon, is in custody, police say . Spoon has been in extreme "mental distress," the suspect's mother says .