Patrick Clancy is seen on an hours-long walk in New York City just days after his ex-wife Lindsay Clancy's murder case was declared a mistrial in Massachusetts. 

Clancy appeared to be clearing his mind as he strolled through the Big Apple, where he lives, in a simple pair of gym shorts and a T-shirt. 

He accessorized with a dark pair of sunglasses as he took his solo walk through Manhattan on Sunday. 

Clancy has been spotted a few times throughout Lindsay's trial, including with his wife, who was not with him on Sunday, while the jury was deadlocked. 

He was also seen riding a Citibike and touring new apartments throughout the trial. 

Clancy did testify at his ex-wife's trial but was largely not seen inside the Massachusetts courthouse. 

The latest sighting comes just days after Lindsay's case was declared a mistrial Friday after a lone juror refused to side with the others. 

She now faces being retried for the deaths of her three children, Cora, five, Dawson, three, and Callan, eight months. 

Judge William Sullivan announced a mistrial at a court in Plymouth, Massachusetts, shortly before 2.30pm ET Friday after an emergency appeal by Lindsay's attorney, Kevin Reddington, failed.

She admits killing her children in 2023 but says she did so while overmedicated and suffering from postpartum psychosis.

Prosecutors now face a number of options, including retrying Lindsay on reduced charges or seeking a verdict decided by a judge, rather than by jurors.

The jury panel of nine women and three men spent over 37 hours deliberating the case after five weeks of evidence.

They sent four notes to the judge this week saying they had been unable to reach a verdict. Yesterday it emerged that 11 of the 12 jurors had come to the same verdict, but a twelfth holdout was refusing to follow them.

Reddington filed an appeal claiming this unidentified juror was biased towards people with mental disabilities.

The final note sent by jurors on Friday morning read: 'It is with a heavy heart that we are unable to come to a unanimous decision and will not be able to.'

Friday's Hail Mary motion was put before Associate Justice Dalila Argaez Wendlandt around 2pm ET. The brief hearing took place over Zoom, with Wendlandt issuing her ruling rejecting the appeal shortly afterward.

The panel could not agree on whether Lindsay, 36, was guilty of murder, manslaughter, or not criminally responsible for her actions by Friday morning.

During the sensational five weeks of testimony, prosecutors argued the killings were intentional and well-planned, not the work of someone who had lost control.

True crime fans have also floated wild conspiracies that Patrick Clancy is the true murderer and that Lindsay was framed. Clancy has not faced any charges for the death of his children. 

After the trial was declared a mistrial, Clancy released a statement through his attorney, expressing gratitude toward those involved. 

'Patrick Clancy is grateful to the Court and to the jurors for their hard work, their commitment, and their perseverance,' his lawyer David Meier said.

'The loss of Patrick’s children is something from which he will never recover and from which there will never be closure.

'The prospect of reliving this tragedy through another trial is extraordinarily painful for Patrick, for his family, and for all of us.'

The Daily Mail previously revealed that Patrick has relocated to a Midtown Manhattan high-rise with his new wife, who is a fertility specialist and doctor.

Public records show Patrick moved from suburban Massachusetts to Manhattan in May 2023, four months after the deaths of his children.