The US Food and Drug Administration is now looking into reports of dangerous radiation levels during brain scans at two more hospitals in California, after probing into "unsafe medical scans" at a medical facility in Los Angeles.

As of now, the use of CT scans at Glendale Adventist Medical Center and Providence St. Joseph Medical Center in Burbank are being investigated by the FDA. These brain scans are employed to diagnose strokes.

As confirmed by the officials on Monday, the agency is investigating into 10 reports of more-than-required radiation at the Glendale Adventist, and an undisclosed number of issues, in addition to excessive radiation, at St. Joseph.

According to Glendale spokeswoman Alicia Gonzalez, the problems were first disclosed last month and "were related to a specialty scan that involves three different techniques". She stressed that the procedure "has been discontinued".

The probes were started by the FDA in October after patients who had undergone scans at the Cedars-Sinai Medical Center in Los Angeles reported loss of hair and skin redness. Last month, the hospital admitted that, as opposed to the earlier shared figure of 206, as many as 260 patients were exposed to excessive radiation.

No comments have yet been shared by the St. Joseph Medical Center.