The pace of increases in killings and shootings for New York City slowed last week as desk cops found themselves walking beats in high-crime precincts, NYPD data showed.

After the first full week of a surge of officers on the street as part of the "Summer All Out" program for the week ending June 21, homicides dropped 75 percent compared with the previous seven days. Shootings were down about 40 percent for the same period, according to police statistics.

However, in year-to-date comparisons, killings were up 11.6 percent over 2014, while shootings were 6.1 percent higher, statistics show. The number of shooting victims is up nearly 7 percent from a year ago.

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Overall serious crime is down 6.7 percent so far this year, according to the NYPD.

So far the 10 precincts that are part of Summer All Out are showing mixed results, with six recording no changes in the number of homicides, three showing decreases and one precinct seeing an increase for the week. Four precincts -- the 44th, 46th and 47th in the Bronx and the 67th in Brooklyn -- showed decreases of one or two shootings during the seven days. The 120th Precinct in Staten Island showed a jump from one shooting to two during the week, the data showed.

NYPD Commissioner William Bratton reinstituted the program a month earlier than in 2014 after it became apparent that the city was witnessing a nagging increase in homicides and shootings this year. As part of this year's Summer All Out, some 330 cops were temporarily reassigned from desk jobs to street patrol duties, mostly in the Bronx and Brooklyn. Bratton said he hopes to repeat last year's experience, where increases in slayings and shootings cooled down over the summer months.

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"Last year's Summer All Out initiatives clearly contributed to a significant reduction of violent crime," NYPD spokesman Stephen Davis said Monday. "The 330 officers deployed this year have been drawn from the same pool of resources from last year, which consists of full-duty police officers who have experience in patrol duty."

For last year, the city recorded 334 homicides, the lowest number since modern record-keeping techniques began in the early 1960s. Before Summer All Out started, some law enforcement experts thought this years total killings might exceed last year's.