( CNN ) -- Gunmen attacked a Saudi Embassy convoy in Paris on Sunday , stealing 250,000 euros ( $ 334,000 ) and diplomatic documents , French police say . According to a police union spokesman , a Saudi prince was traveling with the motorcade , but the gunmen appeared to be most interested in the contents of one of the vehicles , forcing it to a stop by brandishing automatic weapons , but without firing a shot . The spokesman described the stolen documents as `` sensitive . '' The gunmen 's car was later found burned out and with the license plates removed . There was no sign of the gunmen , and police are investigating . Le Parisien said that the attack took place near Porte de la Chapelle in the city 's 18th administrative district and that the gunmen were armed with Kalashnikov rifles . The website said Monday that the convoy of 12 vehicles was traveling from a hotel on the Champs-Elysees in central Paris to the Paris-Le Bourget Airport -- northeast of the city -- when two cars stopped it , seizing a minivan containing three people . Le Monde said five to eight robbers were involved . The newspaper quoted an investigator as saying the crime would be more complex if the diplomatic documents had been its target . Frederic Lagache , from the Alliance police union , described the offenders as `` a heavily armed and determined group of individuals , '' French news agency AFP reported . Saudi Arabia denied the car was an embassy vehicle . Its embassy said the car was a rental and the driver was a Saudi citizen who was headed to the airport . `` On the way , the driver was forced to get out the car . The luggage and car were stolen , '' it said . CNN 's Marion Lory contributed to this report from Paris , and Susannah Cullinane reported from London .
NEW : Saudi Arabia denies it was an embassy car . Gunmen stopped a Saudi convoy , seizing cash and diplomatic papers . A prince was in the convoy , but the men seemed focused on the contents of one vehicle , he said . Le Parisien website reported that the gunmen were armed with Kalashnikov rifles .