Police in El Salvador have arrested the domestic partner of a journalist killed over the weekend.

National Police director Howard Cotto said Tuesday that Mario Huezo Portillo has been arrested for killing journalist Karla Lisseth Turcios.

Prosecutor Max Munoz says cameras traced Huezo Portillo when he went to dump the woman's body.

Turcios worked for El Economista, part of La Prensa Grafica media group in the gang-plagued Central American nation.

Huezo Portillo initially told police that he and their son left her resting at home around 12:30 p.m. Saturday. He said when they returned, Turcios had disappeared and did not answer her cellphone or respond to messages.

The 33-year-old journalist's body was found hours later on a highway northeast of the Salvadoran capital, San Salvador.

Police said was strangled.