31.   Both Haitian and Dominican authorities tightened security along their common border.

32.   But authorities have tightened control over unauthorized religious activities following protests and bombings this spring.

33.   Campus authorities tightened the regulations on Thursday.

34.   Chinese authorities have tightened security in an attempt to stop further attempts, putting up barbed wire around some embassies and stationing extra guards.

35.   Following the blast, authorities were tightening security in street markets, the post office and other administration buildings in Zugdidi.

36.   Hull praised Greece for increasing counter-terrorism cooperation with the United States, and he also noted that Greek authorities have also tightened counterterrorism laws.

37.   In recent years, authorities have tightened border controls in hopes of meeting the standards of the European Union, which this Balkan country hopes to join.

38.   Instead, authorities have tightened the screws on her supporters, sentencing dozens to long prison terms while allowing Suu Kyi limited freedom.

39.   Indonesian authorities have tightened security at a Jakarta airport, fearing that dozens of bankers suspected of misusing state money may try to flee abroad.

40.   Long lines are forming at the U.S.-Canadian border as authorities tightened security in response to the terrorist attacks Tuesday on New York and Washington, D.C.