TERROR

New York City police look for higher arrest numbers amid tension between rank and file, mayor

  • New York City Police Commissioner William Bratton, right, with NYPD Chief of Transit Joseph Fox, addresses a news conference at police headquarters, in New York,  Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December.(AP Photo/Richard Drew)

    New York City Police Commissioner William Bratton, right, with NYPD Chief of Transit Joseph Fox, addresses a news conference at police headquarters, in New York, Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December.(AP Photo/Richard Drew)  (The Associated Press)

  • New York City Police Commissioner William Bratton, listens to a question during a news conference at police headquarters, in New York,  Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December. (AP Photo/Richard Drew)

    New York City Police Commissioner William Bratton, listens to a question during a news conference at police headquarters, in New York, Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December. (AP Photo/Richard Drew)  (The Associated Press)

  • New York City Police Commissioner William Bratton, speaks during a news conference at police headquarters, in New York,  Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December. (AP Photo/Richard Drew)

    New York City Police Commissioner William Bratton, speaks during a news conference at police headquarters, in New York, Monday, Jan. 12, 2015. There are signs that disgruntled officers have started making more low-level arrests, New York Police Department officials said Monday. NYPD statistics show arrests were up in the past week after plummeting in the weeks following the fatal ambush of two patrolmen in December. (AP Photo/Richard Drew)  (The Associated Press)

New York Police Department officials are looking for signs that disgruntled officers have started making more low-level arrests.

NYPD statistics show the arrests plummeted in the weeks after two patrolmen died in a brazen daytime ambush in December. Ticketing for traffic and parking violations virtually stopped as well.

Union officials have denied a work stoppage. But the numbers were seen as further evidence of growing rancor between the rank and file and Mayor Bill de Blasio.

The department was expected to release the latest weekly numbers later Monday.