A Lebanese suspect has confessed to placing a bomb on a German train and investigations indicate that he might be linked to al Qaeda, Lebanon's Acting Interior Minister Ahmad Fatfat said on Friday."There is nothing clear now, but in his computer, we found something that can be related to al Qaeda, some contacts," Fatfat told Reuters television. "He denied any contact till now with al Qaeda, but maybe he was working without knowing (it) himself under the umbrella of al Qaeda." The suspect was identified as Jihad Hamad, whom the authorities said yesterday had given himself up in the northern Lebanese city of Tripoli.