2 X 337, Mid Air over Mediterranean Sea
 

On April 14, 2004, two 337's (tuna fish spotting) were involved in a mid-air collission over the Mediterranean Sea. One was EC-HEQ, Reims/Cessna F337F, c/n F337-0239. Can anyone advise the identity of the other aircraft involved.?????

Initial information reports the other 337 as F-GFZI.
I can find no trace of a 337 with registration mark.
However, there is a F-GFZH, is a Reims built FTB337G, construction number is FTB3370035.