Authorities: There could have been three more mass shots

All three cases were brought to the attention of the authorities through public advice.

Here is what we know about them.

Police say he had motivation and ammunition

In Connecticut, 22-year-old Brandon Wagshol was arrested after authorities said he wanted to commit mass shootings on Facebook, according to a statement by the FBI and the Norwalk Police Department.

He faces four charges of illegal possession of high-capacity magazines and is being held on $ 250,000 bail. He is scheduled to appear in court on September 6.

According to the statement, the authorities were informed that Wagshol was attempting to buy high-capacity rifle loaders from third countries.

While the FBI and the Norwalk Police Department were investigating this information, they discovered that Wagshol was trying to make his own rifle and would have published on Facebook his interest in a large-scale shootings, the statement said. The authorities did not provide details on what the message said.

The authorities executed a search warrant at his home and found several weapons, including a handgun, a rifle, a rifle scope for laser rifles, numerous ammunition, a bulletproof vest, a ballistic helmet and other tactical equipment, police said. Some of the weapons were registered by Wagshol's father, but there was access, said the authorities.

CNN contacted the prosecutor and the defense lawyer.

He reportedly told his ex "100 good kills would be good"

Tristan Scott Wix, of Daytona Beach, Fla., Was arrested Friday in a Winn-Dixie car park after sending a series of disturbing reports that he threatened to carry out a large-scale shooting, the county sheriff's office said. from Volusia. The ex-girlfriend alerted the authorities.

In the messages, the 25-year-old said he wanted to open fire on a large crowd, the sheriff's office said in a press release. "100 good killings would be good", read a message. Wix also said that he already had in mind a place, according to the sheriff's office.

"A school is a weak target, I would be more inclined to open fire on a crowd of more than 5 km … I would like to break a world record for the longest confirmed murder of all time", according to another message from the author. the sheriff's office.

Wix wrote that he wanted to die and "have fun," authorities said.

Volusia County Sheriff Michael Chitwood told CNN Sunday that the authorities had recovered a .22 caliber shotgun and 400 rounds of ammunition from the Wix apartment. Wix had initially told investigators that he did not own any firearms, but that he was fascinated by the mass shootings, the sheriff's office said.

Wix was detained without engagement on Sunday at the Volusia County Branch Prison. CNN could not determine Sunday if Wix had a lawyer.

He is accused of threatening a Jewish community center

And in Ohio, James Patrick Reardon, 20, was arrested for allegedly threatening to shoot at a Jewish community center in Youngstown.

An Instagram account owned by Reardon shared a video of a man shooting with a gun, said New Middletown Police Chief Vincent Egidio at CNN. The post – which was shown to an officer during an unrelated call – was tagged at the Jewish community center in Youngstown, said Egidio.

It is not known if the man who fired on the weapon was Reardon or someone else.

Andy Lipkin, executive vice president of the Jewish Federation of Youngstown area, said the post was accompanied by a caption: "The police identified the shooter of the Jewish family community of Youngstown as being the white nationalist Local Seamus O "Rearedon" – Seamus being a Gaelic version of the name Reardon.

The rest of the Instagram account contained antisemitic comments, white nationalist content and footage of Reardon or someone else shooting with guns, said Egidio.

A search warrant was executed and authorities found a cache of weapons and ammunition, said Egidio to CNN.

Reardon was arrested without incident and sentenced on Saturday in Mahoning County Jail for a harassment chief by telecommunication and a leader for aggravated menacing, according to the online prison records. It must be translated Monday morning, said the police chief.

It is not known if Reardon was represented by a lawyer.

CNN's Taylor Romine, Shawn Nottingham, Kristina Sgueglia and Melissa Alonso contributed to this story.