Thirty Pakistani and Afghan immigrants tunnelled their way out of an Indonesian detention centre using spoons, nails and wooden sticks, an official said on Wednesday. The men escaped through the two-metre tunnel in Surabaya city on Monday after digging their way from a toilet, under the main gate to freedom. As some dug, others had played the traditional South Asian board game of carrom to distract the guards. While police have arrested 11 of the escapees, 19 remain at large. They include a man who survived when a boat in Indonesian waters en route to Australia capsized in December, killing around 200 mostly Afghan and Iranian asylum seekers.