At least nine different schools in northern New Jersey were placed on lockdown Tuesday morning after receiving threats from someone claiming to have planted bombs and threatening mass shootings.

Officials say the threats mostly came in via voicemail.

All of the school's involved are located in Bergen County.

Schools in Tenafly, Leonia, Bergenfield, and Teaneck were evacuated about 11:00 a.m., NBC reported, with the other five expected to soon also be cleared.

Evacuations: Nine schools in New Jersey received bomb and shooting threats on Tuesday, leading to mass evacuations. Police are investigating the veracity of the threats

Nine schools in New Jersey were evacuated or placed on lockdown on Tuesday after each received threats of bombs or mass shootings, police said

The students were transported to other schools and other facilities, however the threats have stretched local law enforcement

The other schools are in Garfield, Clifton, Lawn, Englewood and Hackensack.

Four of the schools have been cleared of any danger.

Police are now trying to determine what the connection is between the schools, if there is any.

Bergen County Sheriff Michael Saudino told NJ.com that there is a chance the voicemails were automated.

It appears police were first called to Clifton High School around 9 a.m., with the others quickly also reporting the threats.

Fair Lawn High School and Leonia High School have also been evacuated.

Schools in Tenafly, Leonia, Bergenfield, and Teaneck were evacuated about 11:00 a.m. and other schools are in Garfield, Clifton, Lawn, Englewood and Hackensack were poised to follow

'At this time, there is no indication of any validity to the threat,' Clifton police said in a statement to NBC.

'However, all precautions are being taken in order to ensure safety of the entire school district.

'Additional information will be made available as the investigation progresses.'

Last month, 900 schools in Los Angeles were closed following an email threat.