A bomb killed one person and injured 13 in the Christian sector of Indonesia's Ambon city and police defused another device planted near a church.
The blast at Batumeja market at around 10:30 am -- the third in the city in three days -- sparked panic among residents and shoppers.
A nurse at Bakti Rahayu hospital nine injured people were being treated, of whom three were in serious condition. A nurse at the Maluku Protestant Church Hospital said five people were admitted and one of them later died.
City police chief Leonidas Braksan said officers defused a bomb planted in the grounds of Maranatha church. He said a suspected bomb at the tax office turned out to be a false alarm.
The city in the eastern Maluku islands is still recovering from an outbreak of Muslim-Christian violence which began on April 25. Some 38 people were killed and hundreds of homes and other buildings were torched.
Sporadic violence is continuing even though the government has sent in hundreds of extra troops and police.
Two blasts on Sunday injured five Christians in what national police chief Da'i Bachtiar described as an attempt to provoke more trouble.
"It is regrettable that there are still people who want to provoke trouble. But thank God, people can no longer be easily provoked," Bachtiar said on Monday, adding that police would search for weapons in the city.
Ambon and some other parts of the Maluku islands were ravaged by three years of sectarian clashes which killed more than 5,000 people before a February 2002 peace pact took effect.