The suspect in the Pittsburgh synagogue massacre has been indicted by a federal grand jury, four days after 11 people were killed and six wounded in the deadliest attack on Jews in American history.
The indictment charges Robert Bowers with 44 counts, including hate crimes.
Federal prosecutors have previously indicated they plan to seek the death penalty.
Students from the Yeshiva School in the Squirrel Hill neighbourhood attend the funeral. Source: AAP
The charges were announced on Wednesday, the second day of funerals for the victims.
"Today begins the process of seeking justice for the victims of these hateful acts, and healing for the victims' families, the Jewish community, and our city," US Attorney Scott Brady said in a statement.
"Our office will spare no resource, and will work with professionalism, integrity and diligence, in a way that honours the memories of the victims."
Bowers remained jailed without bail ahead of a preliminary hearing scheduled for Thursday.
Members of Pittsburgh's grief-stricken Jewish community, meanwhile, endured another round of funerals for the congregants who were gunned down in Saturday's rampage.
Melvin Wax, 87, Irving Younger, 69, and Joyce Fienberg, 75, were being laid to rest as part of a week-long series of services.
"It can't be fixed," Robert Libman said at the funeral of Fienberg, his sister, as he clutched his chest while he described the pain of losing her.
"My sister is dead. My sister was murdered. There was no one I know like her. Pure goodness. ... She was the most tolerant and gentle person that I've ever known."
Six people were wounded in the attack, including four police officers, two of whom remained hospitalised with gunshot wounds.
Two congregants were also still in the hospital, one in a critical condition.
Protesters made their presence felt in Pittsburgh. Source: AAP
In a bit of good news, hospital officials said the two most seriously injured shooting victims are improving.
A police officer and a congregant remain in intensive care but are doing "much better", Donald Yealy, chairman of emergency medicine at UPMC, said.
The first three funerals were held on on Tuesday, with thousands of mourners jamming a synagogue, a Jewish community centre and a third, undisclosed site for the funerals of a beloved family doctor, a pillar of the congregation, and two intellectually disabled brothers in their 50s who were known as "the boys".
On Tuesday afternoon President Donald Trump and first lady Melania Trump arrived in Pittsburgh to shouting, chanting protesters.
Demonstrators held signs with slogans including "It's your fault" and "Words matter", a reference to allegations that Trump's combative language has emboldened bigots.
Pennsylvania Governor Tom Wolf and Pittsburgh Mayor Bill Peduto, both Democrats, declined to join him during the visit.
The Trumps lit candles at Tree of Life for the victims and laid white roses as well as stones for each of the dead, a Jewish burial tradition. They later went to a hospital to visit with survivors.
They were joined by Trump's daughter Ivanka and her husband, Jared Kushner, as well as Myers, the Tree of Life rabbi, and Israeli Ambassador Ron Dermer.
