Two suspects have been charged in a quadruple homicide in Troy, N.Y., a crime the police chief described as the worst he had seen in more than 40 years in law enforcement.

“I don’t have to tell you how good it feels to have these two defendants in custody,” the chief, John Tedesco of the Troy Police Department, said at a news conference on Saturday.

He said the motive was unknown, adding that the police were confident there would be no further arrests but that “it’s certainly open as we continue.”