If alleged Earth Liberation Front arsonist Bill Cottrell's lawyer's accusations are true, the FBI must not have a sufficiently strong case to convict him. A month ago the U.S. Attorney's Office requested DNA samples of blood or saliva and now they may be responsible for a government informant attempting to get a confession from Cottrell, during a two- week stay at San Bernardino County jail. Cottrell, who has been held without bail since early March, is accused of vandalizing or setting fire to more than 125 Hummers and SUVs at a dealerships northeast of Los Angeles, last summer.