Attorney General Eric Holder is scheduled to speak at a funeral service for Watson in Louisiana on Wednesday . Colombian police say they ' ve arrested two suspects linked to DEA agent 's killing . Washington has submitted an extradition request for the suspects , police say . Two more suspects are at large , a CNN affiliate said . The agent was killed in a kidnapping attempt ; officials do not believe it was tied to his work .
Colombian police say they ' ve arrested two suspects linked to DEA agent 's killing . Washington has submitted an extradition request for the suspects , police say . Two more suspects are at large , a CNN affiliate said . The agent was killed in a kidnapping attempt ; officials do not believe it was tied to his work .