A 16-year-old boy has been charged with attempting to acquire a biological toxin, or chemical agent, police said.
The teenager was arrested in Greater Manchester on Monday along with a 16-year-old girl, who has since been released without charge.
Officers from the North West Counter Terrorism Unit said there was no intelligence to suggest anyone in the area was at risk.
The boy, who cannot be named for legal reasons, will appear at Tameside Magistrates Court tomorrow.
A 16-year-old girl arrested in a counter-terrorism raid in Greater Manchester has been released without charge, police have revealed.
The girl was arrested along with a teenage boy, also 16, in an operation by the North West Counter Terrorism Unit yesterday.
The boy is still in custody being questioned by police.
Anti-terror police have stressed that the arrests of two teenagers in Greater Manchester are "a precautionary measure" and not linked to "an international terrorist plot".
Chief Superintendent Caroline Ball of the North West Counter Terrorism Unit said:
I know news of an arrest made under terrorism legislation in this community will cause a certain amount of anxiety and people will understandably have questions.
What I want to stress very clearly is that this investigation is in no way linked to any sort of international terrorist plot nor have we recovered any evidence to suggest the community of Mossley is at risk.
I want people to be reassured that we have taken this precautionary action to ensure the safety of our residents.
A girl and a boy, both 16, have been detained in Greater Manchester on suspicion of being concerned in "the commission, preparation or instigation of an act of terrorism".
The North West Counter Terrorism Unit, which made the arrests, said:
Following intelligence received, officers from the NWCTU are also currently searching two addresses in the Mossley area of Tameside.
The addresses being searched are in Hanover Street and Spring Mill Drive, Mossley, which is east of Manchester city centre.
A spokesman said the searches "are expected to last some time". The suspects were detained yesterday.
A 16-year-old boy and a 16-year-old girl have been arrested on suspicion of terror offences and two addresses in the Mossley area of Tameside are being searched, Greater Manchester Police said.
Greater Manchester Police have released diary entries written by Fred Talbot that were shown to the jury at his trial.
A technical fault has brought down emergency phone lines at Greater Manchester Police, sparking a warning to people to only dial 999 in life-threatening or dangerous situations.
BT engineers are currently investigating alongside the force's own technical team to try to resolve the issue.
GMP is experiencing technical difficulties with the 999 number. Please call 999 only in emergency & avoid 101 until fixed. More soon.
A spokesman for the force said there was a back-up system in place to allow 999 calls through, but said the fault meant capacity was reduced.
He said there "should not be" a problem for people in real emergencies getting through, but urged callers to be sensible.
That is why we are stressing to people to only use the 999 number in real emergencies, so we can make sure those really important calls can get through.
UPDATE: Police say the issue has now been resolved and normal service has resumed.
The family of a dying pensioner whose purse was stolen have urged the culprit to give himself up.
The dead woman's nephew and niece, in a statement issued through police, said:
We cannot believe that someone has done this to our auntie. We are absolutely disgusted by this person's actions.
Had Auntie Irene been alive she would have given them the money if they'd asked. We just hope their conscience gets the better of them and they hand themselves in to the police.
To our dearly loved auntie, who was taken from us; you now sit with the angels and your beloved family.
You will be sadly missed by your dear friends and you will always be in our hearts but never forgotten. Rest in peace until we meet again. Good night, God bless.
A search is underway for a missing 10-year-old who was last seen throwing snowballs with friends in Ashton-under-Lyne, Greater Manchester.Read the full story ›