A man from India's Dalit community has been beheaded and his wife hacked to death after a row over a 15 Indian rupees debt in Uttar Pradesh state.
Police said the couple were murdered by an upper caste grocer on Thursday when they told him they needed time to pay for biscuits they had bought from him.
The grocer has been arrested.
Dalits, formerly known as untouchables, form the lowest rung of India's caste hierarchy.
Police told the Press Trust of India news agency the incident took place in Mainpuri district early on Thursday as the couple were on their way to work.
They were stopped by Ashok Mishra, the owner of a village grocery, who demanded that the couple pay the money for three packets of biscuits that they had bought for their three children a few days ago, reports say.