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Slain NYPD officer's funeral, to be led by Buddhist monks, follows cold, wet day of mourning

  • Officers of the 85th Precinct arrive at the wake of New York Police Department officer Wenjian Liu at the Aievoli Funeral Home, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, officer Rafael Ramos, were killed Dec. 20 as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)

    Officers of the 85th Precinct arrive at the wake of New York Police Department officer Wenjian Liu at the Aievoli Funeral Home, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, officer Rafael Ramos, were killed Dec. 20 as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)  (The Associated Press)

  • Police officers gather before the wake of New York Police Department Officer Wenjian Liu at Aievoli Funeral Home, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, Officer Rafael Ramos, were killed Dec. 20, as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)

    Police officers gather before the wake of New York Police Department Officer Wenjian Liu at Aievoli Funeral Home, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, Officer Rafael Ramos, were killed Dec. 20, as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)  (The Associated Press)

  • A sign praising the New York Police Department hangs outside Aievoli Funeral Home before the wake of NYPD Officer Wenjian Liu, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, Officer Rafael Ramos, were killed Dec. 20, as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)

    A sign praising the New York Police Department hangs outside Aievoli Funeral Home before the wake of NYPD Officer Wenjian Liu, Saturday, Jan. 3, 2015, in the Brooklyn borough of New York. Liu and his partner, Officer Rafael Ramos, were killed Dec. 20, as they sat in their patrol car on a Brooklyn street. The shooter, Ismaaiyl Brinsley, later killed himself. (AP Photo/John Minchillo)  (The Associated Press)

Buddhist monks are to lead the funeral of the second New York Police Department officer shot to death in a patrol car two weeks ago.

Thousands of officers are expected to attend the Sunday service for Officer Wenjian Liu (WEHN'-jihn loo) following a somber wake the day before.

On Saturday, visitors bowed their heads three times before Liu's open casket at a Brooklyn funeral home as rain and snow fell on those lined up for blocks to pay their respects.

The 32-year-old officer had served for seven years and was married just two months before he was killed along with partner Officer Rafael Ramos on Dec. 20.

Their killer committed suicide.

The deaths come at a tense time in New York and throughout the country over police conduct.