Islamic militants in Somalia tracked down an underground church leader who had previously escaped a kidnapping attempt and killed him, Christian sources said. Islamic extremist al-Shabaab rebels shot Madobe Abdi to death March 15 in Mahaday village, 31 miles north of Johwar. He had escaped an al-Shabaab attempt to kidnap him March 2. In February, on the outskirts of Mogadishu,…