(BETHESDA, Md.)- A trail of horror in Maryland comes to an end after police apprehend the alleged gunman in three separate deadly shootings that occurred Thursday and Friday.

Police have arrested Eulalio Tordil, 62, a federal law enforcement officer, who is believed to be the suspect in the shooting death of his estranged wife, 44-year-old Gladys Ubaldo Tordil, according to police. She was shot dead while waiting in her vehicle in a parking lot at High Point High School in Prince George's County, Maryland. The shooting happened around 4:30 p.m.

In Thursday's incident, another parent who tried to intervene, was also shot, the Prince George's County Police Department said in a press release. His name was not released, but he is expected to survive, police said. No students were injured, police said.

Police believe Tordil is also behind two additional deadly shootings on Friday in Montgomery County; bringing the total number of shootings to three.

In Friday's incident, police said a man died and two other victims were injured after a shooting at the Westfield Montgomery Mall in Bethesda, Maryland. The mall was not placed on lockdown, authorities said. Police were on the scene.

Minutes later at a separate shooting, a woman was dunned down at a Giant grocery store in Aspen Hill, Maryland, on Friday. Nearby Walter Johnson High School told students and staff to shelter in place, NBC Washington reported.

The suspect, who lives in the 800 block of Metzerott Road in Adelphi, Maryland, has been arrested in Aspen Hill, at the location of the second shooting.