05/10/2012 02:03 EDT | Updated 07/10/2012 05:12 EDT

Mississauga mother charged in baby killing denied bail

A mother from Mississauga, Ont., accused of killing her four-month-old baby boy was denied bail Thursday and will remain in custody until at least May 24.

Corinne Platonov, 40, was calm during a short court appearance on Thursday.

"The expression on her face seemed blank. She seemed almost emotionless," reported the CBC's Jeff Semple from outside the court.

Platonov was arrested on Wednesday after police and emergency services were called to the family's suburban home on Golden Hills Way in Mississauga, just west of Toronto.

When they arrived they found baby Alexander without any vital signs.

Police have not revealed any details of what they found in the home, but they took the mother into custody and charged her with first-degree murder.

Neighbours say the family is well known. The husband is Dr. Michael Platonov, a cardiologist.

The court ordered Platonov to have no contact with her husband or her other child.