Chicago (CBS) -- One person was stabbed in a fight between two customers and employees at a south suburban Burger King Saturday afternoon, police said.

Shaun Hester, who works at the Burger King, said a customer began arguing with an employee around 3 p.m.

It's unclear what the argument was about, but Hester said the customer eventually jumped over the counter and a fight broke out.

Hazel Crest police said an employee was stabbed. That person was treated by paramedics. The wound does not appear to be life-threatening.

According to police, two persons of interest are in custody.

No one has been charged.