Historian Christian Destremau points out that the cargo contained no such quantities of toxic material, but only poison capsules, probably to be of service in attempts to liquidate locals believed to be collaborating with the Mandatory Authorities.[12] According to MI5 files, the parachutists brought three types of poison to Palestine : some suicide pills for themselves, six tubes of powder to put tracking dogs off their scent (they didn't realise this was poisonous and kept it with their food) and an envelope of "arseneous oxide". Regarding these latest, Wieland said that the mufti insisted it be brought for the purpose of eliminating Arab traitors but Latif denied it was the mufti's idea. The 400-page files do not mention any intention to poison population or enough quantities for such a plan.[21]