Conservationist Kyaw Win said many locals had now “lost their enthusiasm” for protecting the mangroves because of a lack of government support.
Elephant poaching in Burma is on the rise amid an increasing demand for ivory and other products made from elephant parts, such as its skin, which is used in traditional medicine.
Locals say it is common for wild elephants to roam around villages on the edge of the Pegu range during the harvest in monsoon season.
The body of a police officer who drowned after his boat capsized while chasing illegal loggers on a river in Sagaing Division earlier this week was recovered on Wednesday.
The incident is the latest in a spate of violent confrontations between law enforcement officials and illegal loggers in Kyauktaga Township.
The officials said they stopped and searched the lorry, which was accompanied by two servicemen, following a tip-off. They found 29 logs of milled lumber, weighing a total of nearly three tons.