Three foreign petroleum engineers abducted by South Sudanese rebels have been released after negotiations brokered by Sudan and Ethiopia. Security officials in the war-torn country said this today.<br/>'<br/>Indians Midhun Ganesh and Edward Ambrose and Pakistani Ayaz Hussein Jamali, who worked for DAR Petroleum, had been seized separately from near their workplaces earlier this month in oil-rich Upper Nile state.<br/>'<br/>The Indians had been abducted on March 8 and the Pakistani on March 19. The two Indians are from the southern state of Tamil Nadu, while Jamali belongs to Sindh province in Pakistan.