article_snippet.sent: (CNN)The arrest and death of Gray in Baltimore has stoked protests and accusations of police brutality.
article_snippet.sent: But it's unclear how Gray, arrested on a weapons charge April 12, suffered a severe spinal cord injury that led to Gray death seven days later.
article_snippet.sent: What we know: Gray was arrested on a weapons charge in a high-crime area of Baltimore known for drugs.
article_snippet.sent: Gray "gave up without the use of force," according to  
article_snippet.sent: An officer apparently took An officer Taser out, and was prepared to use it on Gray, but An officer never deployed it, Baltimore Deputy Police Commissioner Jerry Rodriguez said, and none of the six officers involved in the arrest describe using force against the 25-year-old.
article_snippet.sent: What we know: Court documents allege that Baltimore Police Department Officer Garrett Miller arrested Gray after finding a switchblade in Baltimore Police Department Officer Garrett Miller pocket.
article_snippet.sent: Court documents also say that Gray "fled unprovoked upon noticing police presence."
article_snippet.sent: What we don't know: It's unknown why Gray screamed, and surveillance video doesn't capture the entire incident, start to end.
article_snippet.sent: What we know: In the wake of Gray's death, six police officers have been suspended.
article_snippet.sent: What we don't know: six police officers say six police officers didn't use force against Gray, but that's not certain.
article_snippet.sent: Gray's past run-ins with authorities .
article_snippet.sent: What we know: According to court documents CNN obtained, there were more than 20 criminal court cases in Maryland against Gray, and five of more than 20 criminal court cases in Maryland against Gray were still active at the time of Gray death.
article_snippet.sent: more than 20 criminal court cases in Maryland against Gray involve mostly drug-related charges, but there are charges from March for second-degree assault and destruction of property.
article_snippet.sent: What we don't know: It's not known whether Gray's criminal past had anything to do with Gray arrest, or Gray death.
highlights_snippet.sent: Gray was arrested on a weapons charge April 12; Gray was dead seven days later .
  
highlights_snippet.sent: Gray has a criminal history
highlights_snippet.sent: but it's unclear whether that had anything to do with Gray arrest, or death .