Anderson also reloaded after firing what is believed to have been a.357-caliber revolver, the police chief said.
Two adults were killed, and two students were injured in an apparent murder-suicide attack inside North Park School in San Bernardino, California.
The gunman was identified as Sedrick Anderson, 53, of San Bernardino and his wife was identified as Karen Elaine Smith.
This undated photo released by the San Bernardino Police Department shows Cedric Anderson, 53.
A man who authorities say killed his estranged wife and a student in her special-needs classroom had posted on social media last month that his wife was "an angel". Local law enforcement officials are describing the situation as a murder-suicide, the paper reported.
Police do not believe the children were targeted.
"There was no indication the gun was visible upon his arrival at the school", Mr Maass said. Anderson later took his life, police said. Garcia said that the third victim is a teacher, and she added that at the moment they did not know the age of the injured students or the grade that the teacher taught.
The wounded students were transported by aircraft to nearby Loma Linda Medical Center.
"When I heard about the shooting, I started praying, asking God to keep my daughter safe", she said.The other student, a 9-year-old, is now listed in stable condition at the hospital, Burguan said. The school district is advising that North Park parents report to Cajon High School, just a couple blocks west, with a picture ID in order to pick up their children. "This is truly tragic".
Police received reports of gunshots at 10:27 a.m. and reports of an active shooter shortly after that. It was not immediately clear whether the campus has metal detectors or other equipment created to prevent weapons from being carried into the school.
The 520 other children in the school were immediately evacuated.
Frantic parents rushed to North Park Elementary.
"I can't wait to see her". As the students got off the buses, many of them carrying glow sticks they had been given to pass the time with, police officers applauded and high-fived them.
Shots were fired at approximately 10:30am inside North Park Elementary School.