NEWARK, New Jersey (CNN) -- Two people were arrested Saturday in connection with the triple killing in a New Jersey elementary schoolyard, law enforcement sources said.
Police had been seeking Rodolfo Godinez, 24, in connection with the schoolyard shootings.
Five people have been arrested in the case, and police are hunting a sixth.
"We will not rest until this case comes to a point where we know we have all those involved apprehended," Newark Mayor Cory Booker told a news conference Saturday. "We will ensure that the killers are captured."
One of the two arrested Saturday -- Rodolfo Godinez -- was described as a "principal player" in the schoolyard slayings.
Godinez -- a 24-year-old Nicaraguan immigrant -- was arrested in Prince George's County, Maryland, near Washington, D.C., law enforcement sources said. 
Watch where police caught up with Godinez »
His younger half-brother also was arrested a short time later Woodbridge, Virginia.
"It was a really dramatic and intense pursuit," said Dave Turner, spokesman for the U.S. Marshals Service.
Godinez was seized at what was described as a "flophouse" for day laborers, and he is being held in the county jail. Eight other men were in the house, police said.
Godinez's 15-year-old half-brother is in a juvenile facility in Prince William County, Virginia.
Both were arrested without incident and will face extradition hearings Monday.
The two were wanted in the August 4 killings of Terrance Aeriel, 18, Dashon Harvey, 20, and Iofemi Hightower, 20. 
See how the killings have sparked the community's outrage »
Jose Carranza, 28, an undocumented worker from Peru, and two juveniles previously were arrested in connection with the execution-style slayings. All three have pleaded not guilty. Watch how the shootings shook the community »
Authorities are looking for one more suspect. E-mail to a friend 
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