AlQa'dah 18, 1432, Oct 16, 2011, SPA -- Kenyan troops were operating inside Somalia on Sunday, local media reported, in an apparent effort to capture militants accused of kidnapping four foreigners in recent weeks, including two aid workers, dpa reported. According to military sources speaking to the Nairobi-based Standard newspaper, the troops had penetrated more than 100 kilometres inside the neighbouring country. This is not the first time this year Kenyan soldiers have crossed the border, but the move comes after two top ministers late Saturday vowed a crackdown on the Somalian al-Shabaab militia accused of being behind the recent kidnappings.