After Pagourtzis made his first court appearance late Friday, local news outlets began circulating a court document that showed Pagourtzis had surrendered to police around 8:02 a.m., roughly 30 minutes after police first responded to the shooting. Pagourtzis waved his Miranda rights and confessed to the killings.
Court document shows the gunman in the Santa Fe high-school shooting confessed to the killings
The court document also notes that Pagourtzis told investigators "he did not shoot students he did like so he could have his story told."
Pagourtzis was arrested at the scene and is being held at the Galveston County Jail on a capital murder charge, the sheriff said in a statement. A second person of interest was also detained but has not yet been identified, authorities said.
http://www.businessinsider.com/dmitrios-pagourtzis-santa-fe-high-school-shooter-suspect-shooting-2018-5