Facebook has a billion users in a single day, says Mark Zuckerberg

For the first time over a billion people used Facebook on a single day, according to company founder Mark Zuckerberg.

The "milestone" was reached on Monday, when "1 in 7 people on Earth used Facebook to connect with their friends and family", he said in a post.

Facebook has nearly 1.5 billion users who log in at least once a month, but this was the most in a single day.

The company gained its billionth user in October 2012.

Clive Myrie reports.