A cleaning crew found a stash of gold bars worth $1.2 million in a bathroom compartment aboard a Jet Airways Boeing 737 Tuesday, officials in India said. The 24 gold bars, weighing 53 pounds in total, were in two bags and were discovered during a routine end-of-day checks at Kolkata, India, airport. “It was quite a surprise,” airport director BP Sharma told NBC News. “The bars were packed in bags so we did not immediately know what it was. The bags were inspected and found to be gold.” The flight had traveled from Mumbai to Thailand's capital Bangkok, before returning to Kolkata for the night. Sharma said the appeared to have originated in the United Arab Emirates. A customs official told NBC News that an investigation had been launched but no arrests had been made.