A 25-year-old man believed to be responsible for an explosion that ripped through a Palm Springs, California, fertility clinic left behind “anti-pro-life” writings before carrying out the attack.

Authorities identified the suspect in the explosion at a Palm Springs, California, fertility clinic as Guy Edward Bartkus, 25, of Twentynine Palms, saying at a news conference Sunday that he is the man suspected to have died in the bombing that injured four other people.

A law enforcement official said the person believed responsible for the attack posted online ramblings including a belief that the world should not be populated.