German judicial officials’ on Friday that Andreas Lubitz was issued a sick leave by a doctor and wasn’t supposed to be flying on the day he allegedly crashed a Germanwings airliner into a French Alps mountainside.

According what German prosecutors, Lubitz was on medication and being monitored by a doctor, who also provided hime with documentation to excuse him from work — a document Lubitz allegedly ignored.

During the ongoing investigation, no suicide note has been found nor has any evidence appeared to suggest political or religious motives for his action.

The General Attorney’s office announced that the examination of the documents turned up will last a few days.

Earlier on Friday, a spokesman for Germany’s Federal Aviation Office said Lubitz had a medical condition that was noted in his pilot’s medical certificate as “specific regular examination” (SIC).

However, the spokesman could not say whether the condition was related to his mental or physical health.

As spokesman Holger Kasperski told the Wall Street Journal: “We have a pilot’s license and a medical certificate. There is a SIC record. SIC means specific regular examination. We don’t know what condition it refers to”.

Furthermore, he was unable to confirm an earlier report by Bild, according to which “SIC” possibly concerns serious mental issues.