Hundreds attended a funeral Monday for three members of a wealthy Washington, D.C., family found dead in their home last month. Meanwhile, investigators continued to seek potential suspects in the killings.

Savvas Savopoulos, 46, his wife, Amy, 47, and their 10-year-old son, Philip, were remembered at a noon funeral service at Saint Sophia Greek Orthodox Cathedral in the capital. Their housekeeper, Veralicia "Vera" Figueroa, 57, who was killed with them, is expected to be returned to her native El Salvador, according to the Washington Post.

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

RELATED: Timeline: How police tracked the accused mansion killer

Grieving family, friends, neighbors, and churchgoers lined the walls of the cathedral and spilled past an overflow room set up in the basement well before the start of the service. "It feels like a Hollywood movie," one neighbor told NBC News.

"This tragedy caused an explosion of love, of sympathy," said Archbishop Demetrios, the archbishop of the Greek Orthodox Archdiocese of America, who traveled for the service. "What can we say? We are at the funeral of three people who suffered abruptly and unexpectedly... There are no tears enough."

The Savopolous daughters, Abigail and Katerina, were away during the murders. At the funeral Monday, they were surrounded by relatives at the front of the church.

Darron Dellon Dennis Wint has been arrested in the brutal slayings, and he is being held without bail on charges of first degree murder. Investigators believe he had help in the crime, which began with Wint, 34, allegedly holding the four victims captive in the family mansion before bludgeoning them to death and setting the home on fire.

Before he was killed, Savvas Savopolous, the CEO American Iron Works, had an assistant drop off $40,000 in cash. Wint, a former American Iron Works employee with criminal convictions in his past, was identified through DNA left on the crusts of pizza delivered to the home, investigators have said.