Five young Americans accused of contacting militants over the Internet and plotting terrorist attacks sought their release on bail on Tuesday, saying the prosecution lacked evidence. The students, in their 20s and from the US state of Virginia, were detained in December in the central Pakistani town of Sargodha, 190 km (120 miles) southeast of the capital. They have not been formally charged, but could face lengthy prison terms if found guilty. The case of the Americans has underscored global security dangers posed by the Internet as militants use cyberspace to evade tighter international security measures and plot holy war.