Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Attacks Targeting Aid Workers in Niger Are Latest in Worrying Spike Lisa Bryant PARIS - New findings out Monday show an alarming spike in attacks against humanitarian workers last year, including in part of Africa's Sahel region. That's where some of the latest attacks took place last week against French and Nigerien nationals. France held a memorial ceremony Friday for six French aid workers killed in Niger on August 9, along with two Nigeriens. It was one of a pair of strikes against French humanitarian activists last week-- last Monday, another was gunned down in Guatemala. The Niger attack took place in a nature reserve outside the capital, Niamey -- an area once considered safe for humanitarian activity. But the Sahel region overall is becoming increasingly violent. French troops are working with regional counterparts to fight an Islamist insurgency. It's not the only area of concern. Worldwide, last year marked the highest number of major attacks against aid workers over the past decade -- with 483 workers killed, kidnapped and wounded, according to independent research group Humanitarian Outcomes. Report co-author Abby Stoddard is a former humanitarian worker. "Even though there are attacks in dozens of countries, only a handful of the worst conflict environments have numbers in the double and triple digits, and those drive the totals," Stoddard said. .