JAKARTA, Indonesia (AP) — Poisoning or shooting killed many of the 129 critically endangered elephants that have died on Indonesia’s Sumatra island in less than a decade, highlighting weak enforcement of laws against poaching, an environmental group says.

WWF Indonesia said killings of Sumatran elephants are on the rise, with 29 either shot or poisoned last year, including 14 in Aceh province. The group said Tuesday that no one has been convicted or jailed in the deaths that were counted in Riau province since 2004.