Officials said the man had killed himself with a bomb after trying to enter the Supreme Court, prompting security concerns ahead of the global leaders meeting

A man killed himself with a bomb outside Brazil’s supreme court after trying to enter the building on Wednesday, officials have said, stirring security concerns before the country hosts global leaders from the Group of 20 major economies.

The blasts come five days before the G20 heads of state meet in Rio de Janeiro, followed by a state visit to the capital Brasília by Chinese President Xi Jinping.

In the UK and Ireland, Samaritans can be contacted on freephone 116 123, or email jo@samaritans.org or jo@samaritans.ie. In the US, you can call or text the National Suicide Prevention Lifeline on 988, chat on 988lifeline.org, or text HOME to 741741 to connect with a crisis counsellor. In Australia, the crisis support service Lifeline is 13 11 14. Other international helplines can be found at befrienders.org