The funeral procession the victims of a deadly row house fire arrive for services at Temple University in Philadelphia, today. Officials say it's the city's deadliest single fire in at least a century. (AP Photo/Matt Rourke)

PHILADELPHIA (AP) — Mourners gathered today for funeral services for nine children and three adults who died in a Philadelphia fire five days into the new year, the deadliest blaze in the city in more than a century.

A funeral procession on the rain-soaked streets of the city today morning was followed by services at Temple University’s Liacouras Center, to which members of the community were invited and asked to wear white.

The victims of the Jan. 5 fire were all on the third floor of a duplex north of the city center near the Philadelphia Museum of Art. The three-story brick duplex was owned by the Philadelphia Housing Authority, which is the city’s public housing agency and the state’s biggest landlord.

Three sisters — Rosalee McDonald, Virginia Thomas and Quinsha White — and nine of their children died in the blaze, according to family members. The city last week identified the other victims as Quintien Tate-McDonald, Destiny McDonald, Dekwan Robinson, J’Kwon Robinson, Taniesha Robinson, Tiffany Robinson, Shaniece Wayne, Natasha Wayne and Janiyah Roberts. Officials did not provide their ages.

Investigators last week confirmed that it started at a Christmas tree but stopped short of officially saying that it was sparked by a child playing with a lighter.

The blaze had been the deadliest fire in years at a U.S. residential building but was surpassed days later by a fire in a high-rise in New York City’s Bronx borough that killed 17 people, including several children.