Two men from Colombia have been arrested in what police suspect is their role in several burglaries as well as home invasion robberies targeting Asian households.

Pier Alexander Pelaez, 44, and Edwin Riascos Romero, 32, are both being held at the Collin County Detention Center. Pelaez faces two charges of aggravated robbery and one count of marijuana possession. He was arrested in Dallas on Friday. Romero faces one count of aggravated robbery and one count of evading arrest. He was arrested in Plano on Tuesday. Both also have immigration detainers from U.S. Department of Homeland Security.

Their arrests are the result of a joint investigation that involved police in Plano, Frisco and Richardson as well as the US Marshal Service and Immigration Customs Enforcement. The investigation is ongoing and more charges are possible.

Plano Police spokesman Jerry Minton said Plano is investigating the men's connection to three robberies and five burglaries in March. The men reportedly had a gun and made threats of force. The stolen items included jewelry and cash.

Richardson Police Sgt. Kevin Perlich said his department is investigating whether the men are responsible for two aggravated robbery cases from late February and early March. In both cases residents in those Asian households interrupted burglaries in progress and were threatened.

"The M.O. is very similar on all of them," Perlich said.