41.   Police have linked the group to an campaign of targeting Catholic homes and businesses with pipe bombs.

42.   Police have maintained throughout the week that the raids were over suspicion the group was involved in kidnappings, not openly linking the group to the subway attack.

43.   Right-wing groups linked to Catholic church, including Solidarity, seem to be looking for support.

44.   Rightist groups have been linked to several shootings of politicians and journalists.

45.   Sky TV reported that the Animal Liberation Front, a shadowy, extremist group linked to past acts of violence, had claimed responsibility.

46.   Several officials quoted anonymously by Mexico City newspapers suggested the group could be linked to drug traffickers in the area.

47.   Small leftist groups have been linked to most of the previous bomb attacks, which rarely cause injuries.

48.   Spanish police linked the group the shooting death Tuesday of leading local politician Fernando Mugica Herzog.

49.   The Abu Sayyaf group has been linked to defendants in the World Trade Center bombing, plots to assassinate Pope John Paul II and threats against American airliners.

50.   The Animal Liberation Front, a shadowy extremist group linked to similar actions, has claimed responsibility for the raid.