1.   A rivalry between inmate gangs may have been a factor, a state police spokesman said.

2.   The civil rights investigations put more focus on prisons in California amid allegations that guards at a state prison staged gladiator-style fights between rival inmate gangs.

3.   Told he must choose one inmate gang or another to survive, he refuses.

4.   Art Hanger, a member of Parliament for the conservative Reform Party, blamed the riot on lax discipline by authorities who had tolerated the formation of inmate gangs.