A 17-year-old has been convicted of murdering a student after stabbing him outside a college in Birmingham.
Sidali Mohamed was stabbed after he came out of Joseph Chamberlain College on 13 February. He later died in hospital.
A jury at Birmingham Crown Court also found the 17-year-old guilty of wounding with intent, unlawful wounding and two charges of having an offensive weapon following a trial at the City's Crown Court.
He was acquitted of threatening another person with an offensive weapon and another charge of wounding with intent.
The defendant, who cannot be named, is due to be sentenced on Monday 15 July.
The court heard that the teenager, who was 16 at the time, travelled by bus to the college on February armed with the weapon, after a call had been made to him from Mr Mohamed's phone.
The 17-year-old stabbed the victim in the chest and paramedics and specialist doctors who attended the scene did all they could but he was later pronounced dead at hospital.
A security guard who tried to intervene and grab the knife was stabbed in the back. Giving evidence the defendant said he went to the college after receiving a threatening message.
He claimed he had been scared that Mr Mohamed was going to stab him and had given him a "poke" with the knife but had not intended really serious injury.