With the headline “¡Adios!” in large type emblazoned across its front page, a newspaper in Ciudad Juárez, Mexico, announced on Sunday that it was shutting down after nearly 30 years after three journalists from other news organizations were killed last month.

The newspaper, Norte, said in a letter printed on its front page that the killings and the increasing violence and threats against reporters meant that journalism had become a high-risk profession.

“Today, dear reader, I am speaking to you to inform you that I have decided to close this daily because the guarantee for the safety for us to continue journalism does not exist,” the newspaper executive Oscar A. Cantú Murguía, wrote, adding: “Everything in life has a beginning and an end, a price to pay. If this is what life is like, I am not ready for one more of my collaborators to pay for it and I am not either.”

The announcement came after Miroslava Breach Velducea, a correspondent for the national newspaper La Jornada, was shot eight times outside of a garage on March 23; a columnist, Ricardo Monlui Cabrera, was shot to death as he left a restaurant with his wife and son on March 19; and Cecilio Pineda Birto, a freelancer and the founder of La Voz de Tierra Caliente, was killed at a carwash in Ciudad Altamirano on March 2.