Why did Burger 21 suddenly close in Snellville?

Burger 21 in Snellville is closed after just a few short months — but the jury's still out as to why, exactly.

"Unfortunately, due to a complexity of factors the Snellville location was closed for business indefinitely as of Friday, August 19th," a spokesperson told The Atlanta Journal-Constitution in an email.

The website for the Tampa-based restaurant chain known for handcrafted burgers and shakes lists the Snellville location as temporarily closed. The 1575 Scenic Highway location had only been open since June.