SILVER SPRING, Md. — A federal security officer suspected in three fatal shootings outside a high school, a mall and a supermarket in a Maryland suburb of the nation’s capital is due in court for an initial appearance.

Eulalio Tordil, 62, of Adelphi is scheduled to appear in court Monday afternoon in Rockville, Maryland. He faces charges including first-degree murder.

Police say the shootings began Thursday when Tordil fatally shot his estranged wife Gladys, a chemistry teacher, in a high school parking lot. A bystander was wounded.

Authorities say the shootings continued Friday at two other parking lots, one outside Montgomery Mall and the other at a shopping center. Police said those shootings, including one in which two other people were wounded, were likely botched carjackings.

A friend of the Tordils said in an interview Sunday evening that he saw the couple as recently as three weeks ago and was not aware they had any troubles. Gary Cochran of Sterling, Virginia, said Eulalio Tordil, who attended high school with his wife, was “always smiling and very polite.”