A Minneapolis man who went to prison for harboring a killer is charged with sexually assaulting a young teen and threatening to slice her mother's throat in separate incidents, according to charges.

Prosecutors were so concerned for the public's safety that they asked a Hennepin County District Judge to set a high bail for 46-year-old William M. Hall II.

Bail was set upon Hall's arrest at $500,000 without or with conditions, Judge Carolina Lamas on Friday chose to set it at $25,000 with typical conditions that include no contact with the victim(s), no weapons possession, remain law-abiding, make court appearances, supervised release and no unsupervised contact with minors.

Hall posted a noncash bond through a bonding company and left the jail Saturday, two days after his arrest on a charge of first-degree criminal sexual conduct stemming from an alleged rape in a north Minneapolis home in late December 2014.

The county attorney's office, which argued for the higher bail without conditions, laid out its concerns in the criminal complaint against Hall. It noted that he also has a second-degree assault charge pending that contends he "held a large knife to [the] throat" of the sex assault victim's mother in August 2015, and he's also threatened the lives of the woman and her children repeatedly.

"He is a danger to [the woman's] entire family and the general public," prosecutors said in the charging document. "As such, your complainant requests that [a] high bail be set."

Hall's attorney, William Selman, said Tuesday that his client "vehemently disputes the charges in these cases" involving a woman he had a relationship with and her 14-year-old daughter.

In his second-degree murder charge, Hall and his brother admitted to aiding in the 1995 shooting death of a man outside a south Minneapolis motel. Hall was in the car that drove the shooter from the scene and helped the gunman elude police.

Paul Walsh • 612-673-4482