'THREAD' keyword in CALL statement causes parsing error

We are trying to parse Cobol sources.

Using the keyword ‘THREAD’ in a CALL statement causes a parsing-error.

Versions used:
Cobol: AcuCobol version 10.2.1, fixed format
SonarQube: Enterprise Edition Version 9.6.1 (build 59531)

– extract from the parser logging –

ERROR: Unable to parse COBOL source file : /build/builds/_NwxSV3v/0/dataserver-utilities/tdeltaplayground/sonar-parse-errors/cobol-src/source/PP0024 at line 5

Original contents starting from line 1 till line 6:
       IDENTIFICATION DIVISION.
       PROGRAM-ID. PP0024.
       PROCEDURE DIVISION.
      *    The THREAD keyword causes the parser to fail:
           CALL THREAD "SOME_PROGRAM"
           GOBACK.


Preprocessed contents: 
Parse error at line 5:

    1:  IDENTIFICATION DIVISION .
    2:  PROGRAM-ID . PP0024 .
    3:  PROCEDURE DIVISION .
    5:  CALL THREAD "SOME_PROGRAM"
            ^
    6:  GOBACK .
    7:  EOF

Please fix this parse-error

Indeed, we should fix that.
Ticket created: SONARCOBOL-1651
As a workaround, you may add IN before THREAD.