Dozens of federal agents with help from Michigan authorities have raided two sites in northern Michigan, taking precautions for possible exposure to hazardous chemicals.
The Leelanau County Sheriff's Department says about 60 federal agents are participating in the investigation, which led to raids Friday in Suttons Bay and Leelanau Township.
Sheriff Mike Borkovich says in a Web posting that "other searches are being conducted related to the case in other states."
The Suttons Bay property searched by FBI agents on Friday is owned by Cecily Horton according to county records.
Horton and her husband own two homes in Houston, Texas and another home in Bryan, Texas that were also searched by the FBI Friday, according to KPRC Local 2 News.
Sources told WDIV in Detroit that agents were searching for chemicals that could be used to make tear gas or nerve gas and that the agents were focusing on the couple's son.
FBI spokesman Robert Beekman in Detroit confirms the Michigan raids but says the affidavits that led to them are sealed and so he can't disclose any information about links to raids elsewhere.