The jury in the trial of Graham Dwyer has been shown videos of him flying a model aeroplane at a family event 3 days before he is alleged to have stabbed Elaine O'Hara to death.

The 42 year old architect from Kerrymount Close, Foxrock denies murdering the childcare worker at Killakee Mountain in Dublin on August 22nd, 2012.

Amateur videos show Graham Dwyer landing a WOT 4 model aeroplane at a club in Roundwood three days before Elaine O'Hara's alleged stabbing.

Club member John Flynn identified the architect in the footage and what he thought were his children at family day.

The jury heard the architect also belonged to a model aeroplane club in Shankill.

Members there were asked by the prosecution to recall a dead sheep being found in a field about 15 feet behind the clubhouse.

The evidence was that it happened summer time of 2012 or maybe 2011.

Earlier on day 13 of the trial the jury has been hearing from Siobhan McKevitt, an accountant and manager at A&D Wejchert - the architect firm in Dublin where Mr Dwyer worked.

She spent a couple of hours giving evidence for the prosecution about the attendance of Mr Dwyer both in and out of the office on dates in 2011 and 2012.

Under cross examination, she checked attendance records from the firm and gave evidence that he appears to have worked a normal eight hour shift on August 22nd - the day Ms O'Hara was allegedly murdered.

The childcare worker was last seen at Shanganagh Cemetery in the evening time.

Her remains were found at Killakee Mountain in September 2013.