The accused thieves were identified as three Mexicans — Guerrero Lugo Elivia Grissel, 24, a woman, Campos Molan Elias, 39, and Gonzalez Maldonado Mauricio, 24 — and Venezuelan Gutierez Orlando, 30.

"Apart from these four, there is one more accused, a Venezuelan national, Perez Hander Valmor, who managed to escape from Dubai," joint commissioner of police (crime) Himanshu Roy told The Economic Times. "While the other four were to travel to Hamburg from Dubai, Valmor had a different travel plan and hence could not be detained."

The suspects are accused of stealing $1.4 million worth of diamonds from an Israeli diamond company that was exhibiting at the show.

According to Additional Commissioner of Police (Crime) Deven Bharti, a special team of the Crime branch was selected to bring the accused from Dubai to Mumbai on Wednesday. After completing all government formalities as per extradition treaty between the UAE and India, the accused were handed over to the Mumbai police by the Dubai police.