LEIPZIG - German police Monday arrested a Syrian man suspected of plotting a militant bomb attack after a two-day manhunt, in a case that has sparked fresh calls for greater checks on asylum seekers. Authorities tightened security at airports and train stations after Jaber Albakr, 22, slipped through the police net Saturday when they raided his apartment and found several hundred grams of "an explosive substance more dangerous than TNT". Police finally got their man with the help of another Syrian, whom Albakr approached at the train station in the eastern city of Leipzig, seeking shelter, according to Spiegel Online.