Syntax error: missing 'integer' when creating stored procedure in MySQL

When trying to create the stored procedure below, I get the title error in line containing: kill nID;
What I'm doing wrong:

DELIMITER //

DROP PROCEDURE IF EXISTS ClearDB//

CREATE PROCEDURE ClearDB()
BEGIN
DECLARE nID, bCursor int;
DECLARE cursorQuery CURSOR FOR 
    SELECT ID
    FROM information_schema.processlist
    WHERE 'TIME' > 1200;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET bCursor = 1;

OPEN cursorQuery;
SET bCursor = 0;

WHILE bCursor = 0 DO
    FETCH cursorQuery INTO nID;
    kill nID;
END WHILE;

CLOSE cursorQuery;
END //
DELIMITER;