New Delhi, April 30 -- Oil prices continued to rise on Thursday amid concerns that supply from the crucial Middle East producing region could remain constrained for longer, as negotiations to end the US-Israel conflict with Iran have stalled.

Brent crude futures for June climbed to $122 a barrel, following a 6.1% jump in the previous session. The June contract, which marked its ninth straight day of gains, expires on Thursday, while the more actively traded July contract rose 94 cents, or 0.85%, to $111.38 after advancing 5.8% in the prior session.

Meanwhile, US West Texas Intermediate (WTI) crude futures for June gained 63 cents, or 0.59%, to $107.51 a barrel, after surging 7% in the previous session and rising in eight of the last nin...