(ETH) – Police departments in New York City and other large metro areas across the U.S. are bulking up patrols and implementing new tactics to prepare for what they say could be a violent summer.

States lifting Covid-19 restrictions and more people out in public spaces in warmer weather increase the likelihood of more shootings, as well as less serious crimes, officials say. Many crimes, including violent ones, normally rise in summer. Gun purchases also rose during the pandemic and cities have seen an increase in guns being used in crimes.

Shootings and homicides in big U.S. cities are up this year again after rising last year. In the last three months of 2020, homicides rose 32.2% in cities with a population of at least one million, according to the Federal Bureau of Investigation’s Quarterly Uniform Crime Report.

In New York City, the number of homicides has reached 146 for the year so far, an increase of 27% from 115 during the same period in 2020. In Dallas, police have counted 75 homicides this year, up from 58 during the same period last year. Chicago police have recorded 195 homicides, up from 160 in the year-ago period.

“We’re coming out of the pandemic, life is starting again and more people are going to be out on the street,” said the Jersey City, N.J., director of public safety, James Shea. READ MORE