NEWARK - Following a night of violence in Newark, some are wondering if the spike in crime and the mercury's spike are related.

Monday night, 12 people were shot, including one fatally. Following the incidents, Newark police officers investigated two drug-related shootings. One of the shootings was just two blocks from the new eye in the sky tower.

FBI data suggests violent crimes typically go up every year in July and August. Psychologists say people can get "hot under the collar" much more easily when the mercury rises, but some say they don't buy into that theory.

Others studies that suggest that when temperatures reach 100 degrees or more, crime rates actually start to decline. Experts say that's most likely because people tend to retreat indoors when it gets that hot.