LUANDA, May 18 (Reuters) - Hundreds of diamond smugglers are pouring into Angola's eastern diamond region of the Lundas every day from the Democratic Republic of Congo, a top Angolan general said on Monday.

The general, who asked to remain anonymous because of the military's secrecy laws, said Angola had recently invested $13 million to increase military patrols along the Congo border and stop the flow of illegal immigrants from as far away as Senegal.

'We're talking about hundreds of men, women -- even pregnant women -- who try to break through Angola's border every day,' he said.