The number of anti-Semitic incidents in the Southeast - Alabama, Georgia, South Carolina and Tennesee - rose from 26 in 2015 to 56 in 2016, according to a report from the Anti-Defamation League.

The ADL released its annual Audit of Anti-Semitic Incidents, which includes incidents such as bullying and vandalism at K-12 schools.

"We have already seen a doubling of the number of incidents in just the first quarter of 2017 in our region, jumping from 16 incidents to 32," said Southeast Interim Regional Director Shelley Rose. "It is particularly disturbing to see the number of incidents directed toward Jewish youth. I have received several reports of Holocaust 'jokes' being shared and offensive comments directed at Jewish youth."

Israeli teen charged in threats

The 32 incidents in the Southeast in the first three months of 2017 include four bomb threats against the Levite Jewish Community Center in Birmingham. Those bomb threats were believed to have been made by an Israeli teenager with dual U.S. citizenship, according to FBI investigators and Israeli police.

U.S. prosecutors identified the suspect as Michael Kadar, 18, of Ashkelon, Israel. Kadar is facing charges relating to thousands of hoax calls worldwide, including against airlines and police stations, according to an indictment filed to a Tel Aviv court, according to The Guardian and the Jewish Telegraphic Agency.

Kadar was charged Monday in district court in Israel with thousands of counts on offenses that also include publishing false information, causing panic, computer hacking and money laundering.

The Israeli indictment includes allegations that he made threats to about 2,000 institutions worldwide using sophisticated technology to mask his voice and IP address.

Kadar, who has not been named in Israeli proceedings, was arrested last month in Ashkelon, after a joint investigation by Israeli and U.S. authorities, including the FBI. The threats contributed to fears of rising anti-Semitism in the United States.

Nationally in 2016, there was a 34 percent year-over-year increase in incidents - assaults, vandalism, and harassment - with a total of 1,266 acts targeting Jews and Jewish institutions, the ADL report said. Nearly 30 percent of these incidents (369) occurred in November and December. The surge continued during the first three months of 2017, with preliminary reports of another 32 incidents in these four states and 541 incidents nationwide, putting this year on pace for more than 2,000 incidents. Americans of all faiths have felt the increase and in a poll ADL released earlier this month a majority said they are concerned about violence in the U.S. directed at Jews.

"There's been a significant, sustained increase in anti-Semitic activity since the start of 2016 and what's most concerning is the fact that the numbers have accelerated over the past five months," said ADL CEO Jonathan A. Greenblatt. "Clearly, we have work to do and need to bring more urgency to the fight. At ADL, we will use every resource available to put a stop to anti-Semitism. But we also need more leaders to speak out against this cancer of hate and more action at all levels to counter anti-Semitism."

In the first quarter of 2017, preliminary reports of the 541 anti-Semitic incidents included:

380 harassment incidents, including 161 bomb threats, an increase of 127 percent over the same quarter in 2016;

155 vandalism incidents, including three cemetery desecrations, an increase of 36 percent;

Six physical assault incidents, a decrease of 40 percent.

In 2016, the 1,266 anti-Semitic incidents included:

720 harassment and threat incidents, an increase of 41 percent over 2015;

510 vandalism incidents, an increase of 35 percent;

36 physical assault incidents, a decrease of 35 percent.

The incidents were felt across the country, but continuing a consistent trend, the states with the highest number of incidents tend to be those with large Jewish populations. These include California (211 in 2016 and 87 in Q1 2017), New York (199 in 2016 and 97 in Q1 2017), New Jersey (157 in 2016 and 24 in Q1 2017), Florida (137 in 2016 and 41 in Q1 2017), and Massachusetts (125 and 38 in Q1 2017).

The 2016 presidential election and the heightened political atmosphere played a role in the increase. There were 34 incidents linked to the election. For example, in Denver, graffiti posted in May 2016 said "Kill the Jews, Vote Trump." In November, a St. Petersburg, Fla., man was accosted by someone who told him "Trump is going to finish what Hitler started."

Incidents on college campuses remained mostly flat, but anti-Semitic incidents at non-Jewish elementary, middle, and high schools increased 106 percent, from 114 in 2015 to 235 in 2016. This increase accelerated in Q1 2017, when 95 incidents were reported.

"Schools are a microcosm of the country," Greenblatt said. "Children absorb messages from their parents and the media, and bring them into their schools and playgrounds. We are very concerned the next generation is internalizing messages of intolerance and bigotry."

The statistics reflect white supremacist activity, the ADL says.

"These incidents need to be seen in the context of a general resurgence of white supremacist activity in the United States," said Oren Segal, director of the ADL Center on Extremism. "Extremists and anti-Semites feel emboldened and are using technology in new ways to spread their hatred and to impact the Jewish community on and off line." Incidents in 2016 and Q1 2017 included network printer hacks and the use of source-masking technology to make it easier to harass Jews anonymously. "The majority of anti-Semitic incidents are not carried out by organized extremists, as the bomb threats in 2017 demonstrate. Anti-Semitism is not the sole domain of any one group, and needs to be challenged wherever and whenever it arises."

ADL has been tracking anti-Semitic incidents in the United States since 1979. The audit includes both criminal and non-criminal incidents, acts of harassment and intimidation, including distribution of hate propaganda, threats and slurs. It's compiled using information provided by victims, law enforcement and community leaders.