6 others are said to have been injured in the blasts
At least two people were killed and six injured in two separate blasts in the Quiapo district of Manila on Saturday night.
According to a police report, an initial blast occurred at about 6:00pm local time near a Muslim mosque in Quiapo, one of the older parts of Manila.
Regional Director Chief Oscar Albayalde said in a media briefing that the first explosive was inside a small box delivered as a package.
The two dead were identified as the person who delivered the package and the person who received it, four others are said to have been injured by the first blast.
The second explosion occurred in the same area around 8:30pm, but it did not cause major damage to any of the shops or other buildings in the street.
A policeman was reportedly injured while inspecting the body of one of the victims of the first blast, according to witnesses.
Militants who have pledged allegiance to the Islamic State group are based in the southern Philippines, more than 800km from Manila.
The Abu Sayyaf group, which is most infamous for kidnapping foreigners and killing them if ransoms are not paid, was blamed for the bombing of a ferry in Manila Bay in 2004 that killed more than 116 people.