(CNN) The US Army is warning Americans about a wave of "fraudulent text messages" falsely telling Americans they have been drafted into military service.

The fake texts instruct the recipient to report to the nearest Army recruiting branch "for immediate departure to Iran," and warn about multiple attempts to contact recipients, in at least one case warning "you'll be fined and sent to jail for minimum 6 years if no reply."

The messages appear to have been sent to individuals nationwide amid mounting military tensions between Washington and Tehran . The Pentagon said last week following the US airstrike that killed Iranian General Qasem Soleimani that it is deploying thousands of additional troops to the Middle East, catching military families off guard

Screenshots of the texts provided by US Army Recruiting Command to CNN showed spelling and grammatical errors, indicating they were not official correspondence. Some of the fake texts used real names of Army recruiting commanders -- while others used fictitious names -- lending the false appearance of authenticity, said Kelli Bland, a spokeswoman for the US Army Recruiting Command.

It is unclear how many of these fake recruiting texts may have been sent, and Army security officials are still investigating the source, said Bland. So far there have been no reports of Americans showing up to recruiting branches as a result of the texts.

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