ADEN  - Al-Qaeda's Yemen branch, strongly active in the south of the impoverished nation, executed two of its members on Sunday accusing them of spying on its operations, witnesses said. The pair were accused of planting tracking devices in the vehicles of fellow Al-Qaeda in the Arabian Peninsula militants and of providing Yemeni authorities, and the Saudi and US intelligence services, with information. They were publicly shot dead in front of dozens of residents after the accusations against them were read out, the witnesses said.