The death toll on the Palestinian side is at 583 while Israel has lost 27 soldiers and two civilians since the start of the ground operation.
Even as it braces for an impending famine, clashes between rebels and government forces plague the conflict-ridden nation.
Police reportedly said that the time and cause of death could not be immediately determined as the body was badly decayed when found.
The airline, which suffered its second major disaster in four months last week, has lost nearly $1.3 billion over the last three years.
Experts say a surface-to-air missile most likely brought down MH17.
State-run television stations offer an interpretation of the MH17 disaster absolving Putin of responsibility; Russians seem to be buying it.
The tunnels are a highly coordinated system Israeli and U.S. officials believe took millions of dollars and possibly decades to build.