Oman's prosecutor says a number of people have been arrested for preparing weapons and firebombs for use in an upcoming pro-reform demonstration.
A statement from the prosecutor's office says the weapons were to be used in a demonstration in the northern industrial city of Sohar on Friday.
The statement Tuesday did not say how many people were arrested.
Last Friday one protester was killed in clashes between police and demonstrators demanding more job opportunities and political freedom in the tightly ruled country.
On Sunday, the government released 57 people arrested in crackdowns against pro-reform protests which began in late February.
The protests are small compared with upheavals elsewhere in the Arab world but unprecedented in Oman.