New York Gov. Andrew Cuomo -- interrupting his mourning for his father, former Gov. Mario Cuomo -- attended the wake of slain NYPD cop Wenjian Liu Saturday and urged New Yorkers to get past the divisiveness of the past month.

"My father would have been here today, and I wanted to be here today," the governor said.

"We have to stop the fighting within the family, and we have to come together as the family of New York and stand strong," Cuomo told reporters outside the Ralph Aievoli & Son Funeral Home in Brooklyn, adding that diversity was a strength to New Yorkers, not a weakness.

The governor, whose demeanor was somber and whose eyes appeared red, was accompanied by his girlfriend, Sandra Lee. His father died at 82 on Thursday, just hours after Cuomo's second inauguration.

A wake for the former governor will be held Monday in Manhattan. A funeral service is planned for the following day at St. Ignatius Loyola Church on Park Avenue.

Cuomo spoke only briefly about his father.

"I can say I miss him already. There is a hole in my heart that I fear is going to be there forever -- but today is about the Liu family," Cuomo said.

The governor noted Liu was a newlywed who had achieved his lifelong dream of becoming a New York City police officer.

"It's the ultimate assimilation into America, into New York, to become a police officer, and obviously he was so proud, and he was proud for his family," Cuomo said.

Cuomo alluded to the city's strife -- the protests after a grand jury on Dec. 3 declined to issue an indictment in the death of Eric Garner's death from an apparent police chokehold, and the antagonism shown by rank-and-file cops toward Mayor Bill de Blasio since Liu and Rafael Ramos were gunned down.

"There's a lot of pain and a lot of anguish on many different sides," the governor said, listing the families of Garner, Liu and Ramos, who was buried last Saturday.

With Matthew Chayes