A radio presenter and a producer were shot dead as they broadcast the news live on Facebook yesterday.
Police said the shooting occurred at the radio station, which is based inside a shopping mall in the town of San Pedro de Macoris, just east of the capital of Santo Domingo.
The victims have been identified as presenter Luis Manuel Medina and producer and director Leo Martinez at radio station 103.5 HICC.
During the Facebook Live video gunfire is heard, along with a woman yelling “shots, shots, shots” before the transmission cuts off.
Police said the station secretary, named as Dayaba Garcia, was also injured in the attack and is undergoing surgery.
Medina presented Milenio Caliente (Hot Millennium), a local news programme that included political analysis and social campaigning, and was also the official announcer of the Estrellas Orientales baseball team. He had been using the programme to highlight the issue of pollution in Laguna Mallen, a protected lake in San Pedro.
The intimidation of journalists reporting on organised crime and corruption is said to be fairly common in the Dominican Republic, although murder is rare.