The Archbishop of Canterbury says he is "deeply embarrassed" by a Twitter post from a Welsh bishop, according to The Telegraph.
It says the Most Reverend Justin Welby has written to the Secretary of State for Wales, Simon Hart, to apologise for a social media post by the Bishop of St David's, Joanna Penberthy.
In the post, Dr Penberty told her congregants to "never trust a Tory".
In his letter Justin Welby said he was "truly sorry" for the Bishop's behaviour :
"I… am deeply embarrassed by the use of such language by a church leader. It is absolutely unacceptable, and I am truly sorry.
"I am especially sympathetic because I am very well aware of what it is to be trolled in this way (including by people of all shades of political opinion).
"It is intolerable, and I am determined to work with my sisters and brothers to find better ways to express disagreement."
The bishop has since apologised and deleted her Twitter account. The Church in Wales has also apologised.