Mr Ibrahim will appear in court again next month
A teenager accused of planning acts of terrorism has been remanded in custody.
Andrew Ibrahim, 19, faces charges of possessing explosive substances and articles for terrorist purposes as well as an intent to commit terrorism.
The student was arrested on 17 April and three controlled explosions were later carried out at his flat in Westbury-on-Trym, a Bristol suburb.
He was remanded in custody until 23 May by City of Westminster magistrates after a short hearing.
Avon and Somerset Police, who are being supported by Scotland Yard's Counter Terrorism Command, said the inquiry into the alleged offences was "challenging and complex" and that more work needed to be done.
The teenager was charged on Tuesday with intending to commit terrorism in that he planned to make and detonate an improvised explosive device.
He is also accused of possessing Hexamethylene Triperoxide Diamine, also known as HMTD, which is an explosive organic chemical compound.
In addition, he faces a charge of possessing two home-made vests, ball bearings, air gun pellets, nails and screws, wired circuitry, batteries and electric bulb filaments, intending to use them for terrorism.
No application for bail was made by Mr Ibrahim's solicitor, David Campbell.
Speaking ahead of his court appearance, Mr Ibrahim's family said they had been left "shocked and deeply distressed" by the events of the past fortnight.