The Rock County Sheriff’s Office SWAT team and Special Investigations Unit, along with the state Division of Criminal Investigation Clandestine Lab Team and Janesville police, raided the residence at 6809 W. County A west of Janesville on Friday.
They arrested Keith J. Rose, 37, of that address on suspicion of probation violation.
Rose has now been arrested on charges of manufacturing and possession of methamphetamine and possession of methamphetamine drug paraphernalia and waste, according to a news release Monday.
Rose’s sister, Brittany G. Bobzien, 32, who lives at the same address, is suspected of helping manufacture methamphetamine, Sgt. Mark Thompson said.
Thompson asked the public’s help in finding Bobzien.
She might be in a gray 2007 Pontiac G6 with Wisconsin plate 618-ZFX, according to the release.
“We believe she is still in the area, but we have checked residences where she is known to associate, and we can’t find her,” Thompson said.
Other people who were at the house were detained for questioning on Friday but were released, Thompson said.
Thompson would not say how big a methamphetamine manufacturing operation was going on at the house.
They were using the one-pot method, and several one-pot batches were cooking at the time of the raid, Thompson said.
“During the search of the property, numerous items associated with the production of methamphetamines were located both inside and outside the residence, according to a news release.
Rose is being held at the Rock County Jail. He was expected to make his initial court appearance Tuesday.