Family members say Laura Macintyre and Eilidh MacLeod haven't been heard from since the explosion.
Teenage Girls Charged With Attempted Murder
Two teenage girls have been charged with attempted murder after a man was found seriously injured in Paisley.
The 39-year-old sustained head injuries when he was attacked while walking on Forbes Place at 8.25pm on Saturday.
Police said on Wednesday that the injured man "remains in a serious but stable condition'' in the town's Royal Alexandra Hospital.
The girls, aged 15 and 16, who cannot be named for legal reasons, appeared at Paisley Sheriff Court on Tuesday.
They have been charged with attempted murder and assault to severe injury, permanent disfigurement and danger of life.
Both made no plea or declaration and the eldest was remanded in custody while the youngest was released on bail.
Their case was continued for further examination and both are expected to appear in court again next week.
The families of two girls from the Western Isles missing after attending the concert in Manchester targeted in a terror attack have issued appeals on social media.
Crews were called to the former Royal Victoria Hospital site this afternoon.
John Bermingham was also accused of assault and a breach of a Sexual Offences Prevention Order.
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