On his arrest , Petrov admitted to the murders , but recanted his confession a few months later , blaming it on the intense psychological pressure he had endured while in custody .
They arrested Petrov when he visited one of the patients on 17 January 2000 .
On Petrov 's arrest , Petrov admitted to the murders , but recanted his confession a few months later , blaming it on the intense psychological pressure he had endured while in custody .
They arrested Petrov when he visited one of the patients on 17 January 2000 .