Yes, they do know what happened, that’s why he’s been charged with kidnap and rape.
What they are unclear on is how he came into contact with and targeted this particular child.
“The girl was sleeping in their home around 10 o’clock on Friday night, but when her father woke around 4 am the front door was open and the 6-year-old was gone. She was found at a park about a half mile from her home. When police got there, the suspect ran into the woods, and the little girl ran towards police... Fort Worth Police are still investigating if Edis Moya Alas, of El Salvador knew the family or if he broke into a random home.”
http://myinforms.com/en-us/a/42514896-man-who-abducted-girl-is-in-the-united-states-illegally/
He was also arrested 12/14/2015 for marijuana. That was nearly a year ago so why wasn’t he deported? This rape is squarely on the Terrorist in Chief and ICE’s heads.
http://texas.arrests.org/Arrests/Edis_Alas_25494593/