In January this year, the park authority in Gabon reported that more than 11,000 elephants had been killed in a single preserve, the Minkebe Park, since 2004. In Cameroon, more than 300 elephants were killed in the Bouba-Ndjida national park in the last two months of 2012. Meanwhile, officials in Chad reported the slaughter of 86 elephants, including 33 pregnant females, in a single week last March.
http://www.guardian.co.uk/world/2013/may/28/un-ban-kimoon-wildlife-trafficking-central-africa