Bomb plot raises doubts over UPS plane crashTerrorism expert tells Gulf News that authorities should consider the possibility that the crash of a UPS plane from Dubai in September was caused by an explosive device similar to the ones found on FridayPETN, or Pentaerythritol tetranitrate, PETN, is the same substance used by two would-be bombers of US airlinerImage Credit: WAMThe Dubai Police - quoting experts - said the bomb found in the printer was PETN combined with lead to form a Image Credit: WAMPictures show contents of a US-bound parcel displayed by Dubai Police yesterday.Image Credit: WAMThe device was prepared in a professional manner and equipped with an electrical circuit linked to a mobile teImage Credit: WAMWorkers load packages onto a truck outside Sana'a International Airport yesterday. Yemeni security forces Image Credit: Reuters‹› Published: 00:00 October 31, 2010 By Mick O'Reilly Deputy Managing Editor and Sara Janahi, Staff Reporter SMALLMEDIUMLARGEDubai: Authorities need to consider the possibility that the crash on September 3 of a UPS cargo jet flying from Dubai was caused by an explosive device similar to the ones found on Friday at the FedEx facility at Dubai airport and on a UPS plane at a UK airport."I think it would be very prudent to connect the dots in this incident," Dr Max Abrahms, a leading terrorism expert in the United States, told Gulf News.Radio 2: Dubai Police issue a statement. Malak Harb reportsListen! Listen to Radio 2"It seems like common sense now and clearly there are similarities between the crash and this latest incident."Both bombs found on Friday were addressed to synagogues in the Chicago area, contained PETN — a highly explosive material which could have brought down the planes. One bomb arrived on Thursday and had to remain at Dubai International Airport for 24 hours. Dubai Police received a tip-off via an international call.Dubai Police Chief Lieutenant-General Dahi Khalfan Tamim said Dubai Police succeeded in detecting the package while security authorities charged with carrying out security tasks on Western cargo companies failed.Dahi told Emirates TV that the UAE would announce the source of the packages "within the next 48 hours.""The package arrived on Thursday and had to remain in the airport for 24 hours in what is known as a cooling series in order for the package to be searched," Saif Al Suwaidi, director of the General Civil Aviation Authority (GCAA) told Gulf News. "All packages receive extensive searching for security reasons."Radio 2: Explosives found on US-bound plane. Malak Harb reports Listen!Listen to Radio 2Suspicious packagesOn Saturday night, a GCAA source said that the package which was discovered was shipped from Sana'a on a Qatar Airways plane heading to Doha and then forwarded from that flight to Dubai. In Sana'a on Saturday, security authorities were questioning airport and cargo staff and checking at least 26 other suspicious packages.US security officials say the plot has all of the hallmarks of Al Qaida, with President Barack Obama's counter-terror chief John Brennan laying the blame on the Yemeni franchise. Related Links Yemen arrests woman over plane bomb plotCargo plane crashes in Dubai killing twoFire in cockpit before Dubai plane crash: reportParcel shipped from Sanaa on a Qatar Airways Parcel bombs set off global alertPowerful parcel bomb bore Al Qaida hallmarksAuthorities should dig deeper after bomb found US tightens security, seeks source of bombsGlobal terror scare hits delivery firms UPS, FedExYemen emerges a new regional hub for Al Qaida Saudi intelligence sources tipped off US officials about the threat to air cargo from Yemen.The bomb found inside a cargo plane at East Midlands Airport could have exploded, British Home Secretary Theresa May said, adding that if it had detonated, the explosion could have brought down the aircraft.An Emirates spokesperson said that its flights are all operating normally, after a flight from Dubai landed at JFK International Airport on Friday afternoon with a precautionary fighter escort.With inputs from Alice Johnson, Staff Reporter, Nasser Arrabyee, Correspondent, and agencies.