The western African nation of Gabon shut down internet access and imposed a curfew following its national elections Saturday amid voting delays and as opposition leader Albert Ondo Ossa denounced “fraud” in his challenge against incumbent President Ali Bongo Ondimba. Bongo has already served two seven-year terms, and his family has been in power for over half a century. Critics accuse Bongo of not using Gabon’s oil wealth to improve the lives of one-third of the population living in poverty.