11.   FBI agents joined the investigation, and National Guard troops sealed off the block.

12.   In the past, Russian troops have sometimes sealed off Chechen towns and villages before attacking, causing numerous civilian casualties.

13.   Israeli radio reports said troops sealed the home of the assailant, Mussa Abu Deiyah Ghneimat, and prepared to blow it up.

14.   Israeli troops sealed this troubled and divided city Wednesday, a day after two Jewish settlers were wounded in a shooting ambush blamed on Palestinian militants.

15.   Israeli troops sealed the West Bank and Gaza Strip Thursday and searched cars at Tel Aviv checkpoints, responding to warnings that militants were plotting suicide attacks.

16.   Kenyan troops sealed the border to prevent an influx of Somali refugees.

17.   Makhanu said Kenyan troops sealed the border to prevent an influx of refugees from Somalia.

18.   Meanwhile, Israeli troops sealed the West Bank and Gaza, barring Palestinians from Israel in an attempt to head off new fighting.

19.   More jumped out of vehicles that stopped on a nearby toll road not sealed by troops.

20.   Musharraf said that it was impossible for Pakistani troops to completely seal the border to Afghanistan.