HOUSTON (Associated Press) — Authorities are investigating whether cash and checks discovered during repair work being done at Pastor Joel Osteen’s Houston megachurch is connected to $600,000 that was stolen from a church safe more than seven years ago.

The revived investigation comes after a plumber called a Houston radio station’s morning show during a segment about the most unusual things of value people have ever found and described finding 500 envelopes full of money behind a wall while repairing a leaky toilet at Lakewood Church.

The church did not confirm the plumber’s account but said in a statement that an undisclosed amount of cash and checks were recently found during repair work and the church is assisting Houston police with their investigation.