Malcom Winffel, 45, and another man came out of the Westfield Montgomery Mall in Bethesda Friday morning as Eulalio Tordil tried to carjack the woman in the mall parking lot, Hammil said.
"Those two men acted selflessly and heroically, most likely saving her life", Hamill said.
"These men are heroes. Malcom Winffel gave his life for someone he doesn't know in order to protect her from a predator". All of the shootings Friday are believed to have been motivated by attempted carjackings, Hamill said. "It may be something that we never ever get an answer to".
On Saturday, Montgomery County police charged Tordil with two counts of murder, two counts of attempted murder and four counts of using a firearm in the commission of a felony.
He is being held without bond and will have a review hearing on Monday afternoon, it said.
Police have not identified the victims who died in the shootings at Westfield Montgomery Mall in Bethesda and at a Giant grocery store in a shopping center in Aspen Hill, where Tordil was caught.
Police in Prince George's County also have charged Tordil with first-degree murder and related charges in connection with the slaying of his estranged wife, Gladys Tordil, 44. "But my detectives as well as our scientific experts here in the police department believe that is a very strong, real possibility", Hamill said. He was put on administrative duties in March after a protective order was issued against him when his wife said he had threatened to harm her if she left him, The Washington Post reported (http://wapo.st/1WOrwyg).
Assistant Montgomery County, Md.
According to reports, Tordil is a suspect in the murder of his estranged wife, Gladys Tordil, as well as the shooting deaths of two others.
The protective service said Tordil's weapon, badge and credentials were taken when he was placed on leave.
Hank Stawinski, the police chief in neighboring Prince George's County, where the school shooting took place, lamented that his detectives couldn't find Tordil sooner.
Law enforcement authorities began looking for Tordil on Thursday, after Gladys Tordil was killed outside High Point High School in Beltsville, police said.
In a petition seen by WTOP, Mrs Tordil claimed he sexually abused at least one of her children and touched one "inappropriately".
Prince George's County police put out a description of the vehicle in that shooting, and went to several addresses associated with Tordil to make sure he wasn't planning on hurting anyone else or hide there, police said. Eulalio Tordil also is charged with assault for allegedly shooting the bystander at the school.
Another man and a woman were also wounded in the Westfield mall shooting and taken to hospital in critical condition, but are expected to survive.
Police are still trying to determine why both carjacking victims were targeted by Tordil, but both attempts failed because the victims fought back, and in the mall case, the two men intervened.
Montgomery County, Md. Police Capt. Paul Starks speaks to the media in the parking lot outside the Westfield Montgomery Mall in Bethesda, Md., Friday, May 6, 2016.
Two people died in the Friday shootings and two others were wounded.
Hundreds of people attended a vigil remembering Winffel on Saturday evening at Clarksburg High School, where his two children are enrolled. Winffel's family started a GoFundMe page to raise money for funeral expenses.
Hamill said a search of Tordil's vehicle uncovered a.40-caliber Glock handgun that was used in Friday's shootings. Then, he drove to a supermarket five miles away in Silver Spring, where he fatally shot a woman who was sitting in her auto, police said. She was pronounced dead at the scene.
Winffel was shot outside the mall, and Molina was shot outside the shopping center.
Nobody was injured in the arrest, Hamill said.