(AP) — A Nebraska man charged with assault, child abuse, and using explosives without a permit is scheduled to appear in court in Dodge County.

The county attorney’s office says 29-year-old Travis Lupton fashioned a homemade cannon out of powder he removed from fireworks on July 3. Two children and their mother suffered injuries to their faces when the improvised firework exploded west of Fremont.

An arrest warrant was issued Aug. 30 and served on Lupton Sept. 5. He is scheduled to appear in court on Sept. 24.

His attorney Adam Sipple in Omaha declined to comment.