Officer Suspected in Three Fatal Shootings in Maryland in 24 Hours in Custody, Police Say
updated 05/06/2016 AT 04:35 PM EDT
•originally published 05/06/2016 AT 03:30 PM EDT
Police arrested Eulalio Tordil, 62, on Friday afternoon. Two of the shootings occurred Friday, while one occurred Thursday, leaving three people including his estranged wife dead and three people injured.
According to the "wanted" poster issued Thursday by Prince George's County Police, Tordil served as an officer for the Federal Protective Service for Homeland Security. The poster states that he has previously threatened to "commit suicide by cop."
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On Friday, the violence began at about 11:30 a.m., when three people were shot in the parking lot of the Westfield Montgomery Mall in Bethesda, Maryland, a Montgomery County Police spokeswoman confirms.
One male victim later died at the hospital, say police. Another man remains in critical condition. A female victim sustained non-life threatening injuries.
Twenty minutes later, police responded to a second shooting outside the Giant Food supermarket – about eight miles away from the mall in Silver Spring – which left one woman dead.
Tordil allegedly opened fire on school grounds at High Point High School in Beltsville, Maryland, Thursday evening, shooting and killing his estranged wife Gladys Tordil, 44, police confirmed to PEOPLE.
Students and staff at all Montgomery County schools were put on lockdown Friday as police searched for the suspect.
At a Thursday press conference, Montgomery County, Maryland, Police Chief Tom Manger said that plainclothes officers had Tordil under surveillance for about an hour and observed him eating lunch at a restaurant.
"At no point was it safe to take him into custody until we did," Manger said. "My officers had the well-being of the public in mind and kept him under surveillance and were ready to act if needed."
He added, "We did not want to endanger anyone and have a shootout when we took him into custody."
Officers arrested Tordil after they spotted him in his car in an Aspen Hill parking lot near the Giant grocery store.