An SNP MP has accused the party's Westminster chief whip of "bullying" after the pair clashed in the House of Commons on Monday.
Western Isles MP Angus MacNeil made the claims against Brendan O'Hara, who represents Argyll and Bute, after a public falling out between the pair in the division lobbies.
Disciplinary notices sent by O'Hara to MacNeil were also claimed to have been thrown across the floor. The notices were about MacNeil's attendance record.