GUWAHATI, MAY 31: Foreign-made RDX and TNT have been recovered, an ULFA militant carrying them arrested and six ISI agents apprehended in separate incidents in Assam, police said on Wednesday.The explosives, which were recovered from a truck at Amingaon here on Tuesday, had been brought from ULFA's camps in Bhutan to carry out subversive activities, Additional Director General of Police, Special Branch H K Deka told newsmen here.The haul, including four packets of RDX, one sophisticated RDX-fitted bomb, a bag of TNT, two anti-personnel landmines, 25 detonators, 30 rounds of 9 mm pistol and eight SLRs, was the in the third major one in the city during the past one year."The markings are too faint to decipher the name of the country of origin of the explosives," he said.The explosives were recovered when the police acting on a tip off detained the truck on way here from Nalbari, the police said, adding an ULFA militant Mantu Bora who was in the vehicle was arrested.The militant was to hand over the consignment to his colleague here, the police said.In another incident six ISI agents were apprehended by 26 Madras Regiment of the Army in Nalbari district and documents recovered from them since Monday, district police said.Blue-coloured `Reporter of ISI' identity cards, a letter containing instructions for conducting their activities, 15 leaflets and documents were recovered from them, the police said.