When Nicole Meier's ex-boyfriend shot her to death and then killed himself several weeks ago, as police say, some things about that tragedy fit classic patterns of domestic abuse everywhere.
Jesse Oakley had a history: His former wife said he had repeatedly threatened to kill her or himself, and she had a protective order against him.
Meier had moved out over the summer and was worried enough to call for a police escort.
But the killing fit another pattern that officials are struggling to understand: It happened in Anoka County.
From November 2006 through early this month, 11 women have died in domestic homicides there -- more women, per capita, than anywhere else in the Twin Cities.
The county's domestic homicide rate is nearly twice that of its closest entirely suburban peer, Washington County, according to data from the Minnesota Coalition for Battered Women.
Those in the county who deal with the aftermath of domestic abuse are searching for insight into what is driving domestic homicides. So far, they are hard put to explain whether the numbers are a fluke.
"It's a great social science question," said Paul Young, chief of the county attorney's violent crime division. "Based on our economics, based on our social histories, whatever, there's something about the message about how to act appropriately in your domestic relationships that for whatever reasons isn't as effective as it is in other places."