Medical experts testified this afternoon that 2-year-old Damion Thomas died in 2008 from multiple blunt-force injuries that weren't accidental.
The toddler had external and internal injuries that were new and old, they testified.
Attorney Lee McMaster, who is defending his client, DeWhite Cameron, against a murder charge and aggravated battery charge, drew testimony from the experts that they couldn't say who caused the injuries, exactly how they were caused or precisely when they occurred.
Cameron was the live-in boyfriend of the boy's mother. Authorities said she was at work when emergency crews found Damion not breathing at his Wichita home.
Earlier in the day, Damion's now 5-year-old brother testified. Prosecutor Shannon Wilson asked the boy a series of questions about what happened the day his brother, Damion died.
At one point the boy answered, "Because God did it."
Cameron is on trial in Sedgwick County District Court charged with first-degree murder in Damion's death and with aggravated battery of the boy's twin brother.
The 5-year-old, who was 4 when Damion died in September 2008, said he didn't want to talk about everything that happened that day.
In other testimony, a police officer said he found a bloody towel in a trash bag behind the residence where Damion was found by emergency crews, bleeding and unresponsive.
In a hearing last week, prosecutors said the blood on the towel was that of Damion.
Another officer testified today that Cameron appeared nervous before he was taken in for questioning, as if he had done "something wrong."