Police increasingly suspect that the killing of two patients at a hospital in Yokohama may have been conducted by a person connected with the facility and with medical knowledge, investigative sources said Thursday.
The person may also have randomly sought to tamper with intravenous drips because some 10 unused drip bags were found with small holes, in a possible sign someone tried to inject into them surfactant compound, which police believe was used to kill the two patients.
A week has passed since the police began a full-fledged investigation into the cases that took place at Oguchi Hospital, but who and for what reason the intravenous drips had been tampered with remain a mystery.