Police in the Mississippi River city of Alton hope an autopsy on a body found in an abandoned home's basement offers clues to how the person died.

The (Alton) Telegraph reports that workers for a Missouri demolition company found the body Tuesday morning and called police.

It's not immediately clear how long the body had been there.

Alton police Lt. Scott Golike says the death appears to involve suspicious causes.

An autopsy was planned for Wednesday.