LANSING -- A man suspected of multiple rapes in Lansing has been bound over for trial in one case.

William Thomas, 33, of Lansing, is accused of sexually assaulting a woman March 17 on Lowcroft Avenue.

That victim testified Thursday in a Lansing court.

"'Shut up, shut the (expletive) up,' he told me several times, or he was going to kill me," she said from the witness stand. "He had his knife up in his hand pointed at me."

She says that on Saint Patrick's Day night, a strange man, wearing a do-rag and mask covering his mouth, entered her home and forced her into the bathroom.

"He told me to go into the bathroom and told me to start washing, washing my hands ... and told me to clean under my fingernails, and took the toothbrush and started cleaning under my fingernails with it," she said tearfully. "He told me to take off my clothes. He still had the knife on me."

The assailant then raped her at knife-point on the bathroom floor.

Afterwards, he sprayed the floor and the victim with disinfectant and forced her into the shower.

She said Thursday she is convinced Thomas is the assailant:

"I believe it's Mr. Thomas," she said, pointing at him. "He has a very distinctive bone structure in his brow, which you could see, deeper-set eyes in the bone structure. I very definitely believe it is him because of that."

The defense countered the assailant was wearing a mask, making it hard to identify him, and called into question key DNA evidence linking Thomas to the scene. They say a do-rag worn by the assailant does have Thomas' DNA on it, but also has that of at least two other people.

The judge ruled the evidence is good enough for trial and denied bond, even warning Thomas the probability of conviction is very high. He faces one charge of criminal sexual conduct in the first degree and one of home invasion in the first degree.

Lansing police have said Thomas is a suspect in three other sexual assaults that took place in 2011, but have not charged him in any of those.

Liam Martin is covering this and will have full reports on Thursday night's broadcasts.