Four drug and weapons charges were filed...

Four drug and weapons charges were filed against Robert Bruce Williams, a Northridge man who was arrested last week on suspicion of setting two fires that destroyed a partly finished condominium project. Williams, 32, was not charged with setting the fires. Authorities said they are awaiting lab tests of evidence that could take weeks to complete. The district attorney’s office charged Williams on the basis of a raid Friday on his home by police and city fire investigators. Prosecutors said the lab tests may determine whether several flammable liquids found during the raid match those used to start the fires on Jan. 8 and 16, which caused an estimated $2.6 million damage to the 114-unit construction project.