Armed robbers snatched $9.5 million and an undisclosed amount of jewelry and diamonds at South Africa’s main airport, police said.

Police said between five and eight armed robbers surprised three security guards inspecting cargo from Amsterdam at Johannesburg International Airport on Thursday, Reuters reported.

“We are still questioning the three security guards with regard to establishing whether they were involved, but we cannot exclude the possibility of an inside job at this stage,” police inspector Mary Martins-Engelbrecht told Reuters.

Engelbrecht said the $9.5 million in cash was destined for Angola, while the diamonds and jewelry were meant to be delivered to a South African-based company, Reuters reported.

Police gave no further details of the haul and said they had so far made no arrests, Reuters reported.

JCK