Two Arab eastern Jerusalem gardeners who work near Prime Minister Ehud Olmert's official residence in the capital ended up in the hospital Monday after security guards said the men did not identify themselves. One of them is in serious condition.

Security officials have been on higher alert lately following two incidents of eastern Jerusalem residents using a bulldozer and tractor to carry out terrorist attacks in Jerusalem. Arab gardeners, using spades and shovels, often work within close proximity of passersby and schools.