Team Ireland secured two national 4x400m records on the final day at the World Indoor Championships in Belgrade, breaking both of the previous records set at the 2004 World Indoor Championships in Budapest.

Cillin Greene (Galway City Harriers AC) Cathal Crosbie (Ennis Track AC), Brian Gregan (Clonliffe Harriers AC) and Chris O'Donnell (Galway City Harriers AC) set a new men's marker of three minutes 8.63 seconds, missing out on a final place by a mere 0.33.

"It was kind of a blur to be honest with you," Crosbie told RTÉ Sport. "I was just running for my life and the crowd was fantastic. It's my first major, major championship so the adrenaline was crazy.

"I'm just happy what we did, an indoor record. We missed out by three-tenths, but I'm so proud of the team."

Sophie Becker (Raheny Shamrock AC), Roisin Harrison (Emerald AC), Sharlene Mawdsley (Newport AC) and Phil Healy (Bandon AC) clocked 3:30.97, missing out a final place by just .06 and shattering the previous record by more than three seconds.

"We went in trying to get into the final and we're a bit disappointed," Becker said of the women's outstanding run.

"We came away with a national indoor record at least, so that's something."

Sarah Lavin provided the Irish highlight in Serbia on Saturday when she finished seventh in the final of the 60m hurdles on the back of setting two personal bests in the earlier rounds.