COLOMBO — Sri Lankan authorities shut down a detergent factory in the capital Colombo on Tuesday after more than 70 people were hospitalised following a suspected toxic gas leak, police said. Police spokesman Ajith Rohana said 72 factory workers and nearby residents were taken to hospital earlier on Tuesday after gas — thought to be ammonia —  from the plant. “Some of them are still in hospital eight hours after the incident was reported,” Rohana said. “Initial investigations suggest there had been an ammonia gas leak from the plant,” he said. — AFP