More than 100 friends and family of missing teenager Theo Kawalla have held a candlelit vigil in Peterborough a week after he disappeared.
The 16-year-old was dropped off by his father in the city for a night out at 1930 GMT on Friday, 18 February.
Friends gathered at Guildhall on Friday night and said they hoped Theo would be found safe and well.
Police spoke to people, handed out leaflets and sent a bluetooth message to mobile phones.
Any bluetooth-enabled device within a 22.8m (75ft) radius of the police's phone received an appeal for information, photographs and last known CCTV images of Theo.
Support for family
Friend Jade Ranger said: "All of us have gathered here to say prayers, to hope Theo is found safe and well.
"There is support for Theo, he is missed by everyone, not just his family.
"It's also support for his family and shows people are there for them.
"We've been talking to people, hanging up posters and just helping each other through it."
Earlier in the day, police divers searched the River Nene in the city.
Late on 18 February and shortly after midnight, Theo had walked along Broadway and then Westgate, before walking through the bus station and along Bourges Boulevard.
He then crossed Bourges Boulevard at the pelican crossing near the old Woolworths building and walked into Lower Bridge Street.
Theo, who is slim and 6ft 1in (1.85m) tall, was wearing blue jeans, a black shiny jacket, a red and white check shirt and black trainers.
Anyone with information should contact Cambridgeshire Police.