Reports from Honduras say hundreds of soldiers have been deployed in the capital, Tegucigalpa, two days after an attack on a public bus that killed 28 people.
Reuters news agency quotes a Honduran defense ministry spokesman as saying the soldiers are in the streets to "deter any criminal group."
Police have arrested a suspected member of the Mara Salvatrucha gang in connection with the attack, which occurred about 200 kilometers north of the capital.
The suspect was identified as 23-year-old Alexis Ramirez. Police say he was caught late Thursday driving a car that carried guns and ammunition of the same type used in the attack.
Gunmen left a note at the scene of the massacre challenging politicians who have taken a hard line against organized crime. President Richardo Maduro has offered a 50,000 dollar reward in the case.
Some information for this report provided by AP and Reuters.