MEXICO CITY — The increasing drug and organized-crime violence in Central America has led the Peace Corps to pull out of Honduras and stop sending new volunteers to Guatemala and El Salvador, the organization announced Wednesday.

Peace Corps officials said they had taken stock of the worsening conditions and decided to withdraw their 158 volunteers from Honduras in January and scuttle plans to send 29 recruits to complete their training.

“We are going to conduct a full review of the program,” Aaron S. Williams, the director of the Peace Corps, said in a statement.

In Guatemala and El Salvador, officials decided to keep the 335 volunteers already in those countries but not to send the 76 recruits who were to begin training there next month. The trainees will be sent to other countries, the corps said.