The security guard who was shot and killed at the Islamic Center of San Diego was a father of eight, a person who knew him told CBS Los Angeles, remembering him for his kindness.

“This guy, like, it didn’t matter who walked up … any random person could just walk up and, like, he would greet them, make sure they are OK. Whether they were homeless off the street looking for something, whether it was a child or elderly,” said Sam Hamideh, a parent who knew the security guard through the mosque.

The security guard, who authorities have not identified, was among three men who were found dead outside the Islamic Center. San Diego Police Chief Scott Wahl credited him for helping contain the situation before police were called.

“I think it’s fair to say his actions were heroic, and undoubtedly he saved lives today,” Wahl said.

San Diego Mayor Todd Gloria said more police officers will be guarding places of worship to assure residents’ safety, “and making sure that we anticipate and try and prevent the very worst.”

“We didn’t meet that mark today, but I have deep gratitude to the security officer who was here, whose actions and heroism undoubtedly saved lives,” Gloria said.

CBS Los Angeles reporter Michele Gile contributed to this report.