31.   Muslim extremists erected a roadblock in northeastern Algeria and ambushed a convoy of police officers, killing eight, the Algerian media reported Thursday.

32.   None has been held since late September, when authorities started regularly erecting roadblocks to prevent them.

33.   On the few roads carved through the jungle, rebels or paramilitary squads suddenly erect roadblocks.

34.   Opposition supporters erected roadblocks in various parts of the country, police said.

35.   Outraged consumers erected roadblocks with garbage cans and started to stone cars passing by.

36.   Police erected roadblocks to prevent the demonstrators from reaching the city center.

37.   Residents erected roadblocks in protest, saying the authorities were targeting their poor neighborhoods because they are strongholds of the opposition Jamaica Labor Party.

38.   Rebels and supporters briefly seize towns and erect roadblocks.

39.   Security forces sent in reinforcements and roadblocks were erected along major arteries to guard against terrorist attacks and attempts to disrupt voting.

40.   Rioters erected roadblocks with garbage cans and started to stone cars passing by.