An empty gas cylinder and a wooden table were hurled from a public housing block in Tsz Wan Shan early yesterday. A security guard at Lok Shing House called police at 6.30am after hearing a bang and finding the items lying damaged on the first-floor podium. No one was hurt. Police believe the gas cylinder was thrown out earlier, because another guard heard a bang, but did not go to investigate. Police are now trying to find out if both items were thrown from the same place - believed to have been above the ninth floor as a clothing rack on that level was damaged. Officers from Tsz Wan Shan police station have conducted door-to-door inquiries in the block, but no one has been arrested. They did not believe the table and liquified petroleum gas cylinder had been thrown from the public areas of the housing block such as a corridor, staircase or rooftop. A Housing Department spokeswoman said it was the first time such large objects had been tossed out in its estates. Throwing dangerous litter can lead to a jail term and demerit points for tenants, who can be evicted if they amass 16 points within two years. Yau Oi Estate tenant Yuen Kin-man, who received an eviction order after accruing 17 demerit points and lost an appeal against the ruling, is expected to move out of his unit next week. Mr Yuen, the first public-housing tenant to be evicted for littering, has applied for interim housing. He earlier spent four months in jail for throwing bottles from his 25th-floor flat.