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The Austin bombing suspect was a homeschooled Christian conservative.

Mark Anthony Conditt, a 23-year-old white male from Pflugerville, Texas, blew himself up early Wednesday morning after a confrontation with police. Authorities have since confirmed that Conditt is responsible for the serial bombings that have plagued Austin since March 2, though they have not ruled out the possibility that he had help. Police haven’t released his motive, but we do know more about his background.

BuzzFeed reports that Conditt grew up in an evangelical homeschooling family in Pflugerville, and that the family was reportedly active in their local homeschooling community:

An acquaintance of Conditt’s, who did not wish to be identified, told BuzzFeed News that she and Conditt were in the same homeschool community in Pflugerville between the ages of 8 and 13. She said that she had playdates with Conditt, who “seemed like a regular boy who liked to have fun and play games.”

“His family seemed very nice,” she said. “I was completely shocked when I heard—I had no idea it would be someone I knew.”

Cassia Schultz, 21, told BuzzFeed News that she ran in the same conservative survivalist circles in high school as Conditt.

Schultz said they were both involved in a group called Righteous Invasion of Truth (RIOT), a Bible study and outdoors group for homeschooled kids that included monthly activities such as archery, gun skills, and water balloon fights. Conditt and his younger sister would usually attend the activities along with 15 to 20 other kids, according to Schultz.

RIOT appears to take its name from “Righteous Invasion of Truth,” a 1995 album by Carman, a Christian rock artist. It’s not unusual for homeschooling families to create organizations like RIOT that provide socialization and skills-building opportunities for their children. A blog confirmed to belong to Conditt indicates that he held socially conservative views as of 2012. But without more information about his motive for the bombings, it’s impossible to know how Conditt’s background influenced his violence, if it was an influence at all.