The government of the United Kingdom issued a travel advisory on Saturday, following two explosions some 2 1/2 hours apart rocked Quiapo.
"You should avoid this area, keep up to date with local media and follow the advice of the local authorities," the statement said.
The first blast at 5:55 p.m. killed 2 people and injured 4, while the second at 8:25 p.m. injured 2.
In a statement by Chief Superintendent Oscar Albayalde, the director of the National Capital Region Police Office said that the Philippine National Police has the situation under control.
Albayalde also urged the public to stop spreading misinformation, especially on social media, because it can cause people to panic.
He said people must be more attentive to their surroundings and report to proper authorities any suspicious activity.