There's something wrong with this story

This is a story about a jail guard in Travis County Texas who beat his pregnant ex-wife (actually divorce in progress) to near death while killing a male friend of hers.

It's this little sentence buried in the story that causes a "Huh?"

Round Rock police had been to the Conley home 10 times in four months preceding the attacks, but police said there were never allegations of violence made.

Then what were they doing there?

btw, I have a former girlfriend who works as a teacher in the same jail this clown worked at