Acording to local police, the attackers burst into the 103.5 studio and shot dead presenter Luis Manuel Medina as he was reading the news. Gunfire and a woman's voice shouting "Shots, shots!", can be heard in a video streamed nFacebook Live by a journalist who was present at the time.
According to local media, the station's director Leonidas Martinezwas also shot dead moments after that incident in his office.
"Two people have died and one has been injured," national police spokesman William Alcantara told reporters. He identified the wounded person as the station's secretary.
As of now, no charges have been brought against the suspects in police custody.
According to Reporters without borders, a media rights watchdog, journalists who are outspoken against corruption and drug trafficking in the Dominican Republic, often fall victim to attacks.
Medina was also the official announcer of the Estrellas Orientales baseball team.
In 2011, another journalist Jose Agustin Silvestre was kidnapped and shot dead shortly after promising to reveal an expose on drugs and corruption which involved local businessmen.
In the past, such attacks were very rare in the Dominican Republic, but they seem to be on the rise as the country has become an important conduit for drugs heading to the US.