Russian Natalia Wilson, who is charged with killing Bulgarian Slavka Naydenova, and her 8-year-old son in the United States last year, should be executed by electric chair, the father and grandfather of the victims have said.

"First let me say that I am glad that they have caught her and she has confessed. I want the US court to stick to the law and execute her by the electric chair. Unfortunately nothing can bring back my dead children," Pavel Naydenov said in an interview for 24 Hours daily.

Naydenova, sister of Bulgarian tycoon, founder and President of the Multigroup Corporation, Iliya Pavlov, who was shot dead in 2003, and her son Paul Wilson were stabbed to death in their home in Dale City, Virginia on February 2, 2011.

Naydenova's current husband came home from work to find their bodies about 11 p.m., police said. He has been ruled out as suspect.

At the beginning of March, the Russian woman confessed she committed the murder out of jealousy.

The confession was made after a lengthy 20-hour interrogation. Natalia Wilson claims that she was in an emotionally affected condition when she killed 41-year-old Naydenova. Wilson also confessed of killing Naydenova's 8-year-old son.

Lawyers for Natalia Wilson claimed statements she made to police were coerced.

Prosecutors are pressing for death penalty.

Natalia Wilson is the second wife of Lester Wilson, an American national whom Slavka Naydenova divorced.

Naydenova is reported to have met her current husband – Filip Nikolov – at the funeral of her brother. Nikolov used to be one of the bodyguards of Iliya Pavlov. He currently works in the US as a janitor. Naydenova's second husband is not a suspect.