1.   A social worker, a yuppie from Los Angeles, arrives to investigate.

2.   According to the police, Johnson was sitting in a red Mercedes with two other men when officers arrived to investigate the reports of shots being fired.

3.   Officer Jay was shot as she arrived to investigate, police said.

4.   The incident on Sunday began when the police arrived to investigate reports of a mass grave that was said to contain bodies of missing Macedonian Slav villagers.

5.   When police arrived at the hospital to investigate his wound, he gave them a false name, then abruptly pulled out his intravenous tube and left.

6.   Police arrived to investigate, he said, and a subsequent blast wounded two officers, he added.

7.   Paramedics treated the wounded at the scene, and both Israeli soldiers and PLO police arrived to investigate.

8.   By the time authorities arrived to investigate the flames -- discovering a fireplace and file cabinet full of burning documents -- Frankel had begun his life on the run.

9.   Four Cuban doctors have arrived to investigate a meningitis epidemic that has killed dozens of people in southern Haiti.

10.   He was eventually subdued after trying to grab a U.S. embassy guard who arrived to investigate, Nicaraguan police said.