Jack LaSota, who had been in custody in Delaware County at one time, and Michelle Zajko, the daughter of the slain Chester Heights couple, are in custody in western Maryland.

The killing of U.S. Border Patrol Agent David Maland near the Canadian border last month and five other homicides in Vermont, Pennsylvania and California have been tied to a cultlike group.

Officials have offered few details of the cross-country investigation, which broke open after the Jan. 20 shooting death of a Border Patrol trooper in Vermont.

Here’s a look at the timeline of events in a series of killings that culminated in a Jan. 20 highways shootout that killed a Border Patrol officer in Vermont

In the wooded outskirts of Chapel Hill, North Carolina, a perplexed landlord noticed odd sights at two of his rental properties. A third, a shadowy figure known online as “Ziz,” remains missing after authorities linked their cultlike group to six deaths in three states.

The apparent leader of a cultlike group known as the Zizians has been arrested in Maryland along with another member of the group.