A former Sydney Kings basketballer who allegedly threw rocks through the window of the Lindt Cafe where gunman Man Haron Monis took 17 people hostage has been denied bail.

Luke Martin, 34, was charged with several offences, including driving in a dangerous manner, causing a police pursuit (Skye's Law), assaulting police occasioning actual bodily harm and resisting arrest.

He was also charged with malicious damage relating to throwing the rocks at the Lindt Cafe, which reopened on March 20 this year three months after Monis sparked a 16-hour stand-off with police which left three people, including himself, dead.

Martin was denied bail after the magistrate deemed he was an unacceptable risk to the community.

Sorry, this video has expired Luke Martin allegedly caught on CCTV throwing rocks at Lindt Cafe

He appeared in Sydney's Central Local Court with his shirt ripped across his chest.

Police prosecutor Mark Gorman said there was a strong case with the CCTV footage showing the bag of rocks.

He also said that Martin remained a risk to the public.

"[He has] a demonstrated ability and willingness to endanger public safety in order to avoid apprehension," he said.

"In context ... he'd have to be aware of the sensitivity of the broader community of the Lindt Cafe."

Martin's lawyer Lucinda Opper said he had no criminal history.

The windows of the Lindt Cafe in Martin Place in Sydney's CBD were broken by rocks overnight. ( ABC News: Greg Hatch )

"He's never been in custody or arrested before," she said.

Ms Opper said Martin was out of work.

Magistrate Megan Greenwood in refusing bail said that some of the allegations were disturbing and reiterated the seriousness of some of the charges, including the assault on police.

"Despite the fact that you have no criminal history, it's difficult to understand the circumstance," she said.

"There's something puzzling about this."

Police also alleged Martin was seen driving recklessly through the city after breaking windows at the Lindt Cafe.

Police pursued him to Darlinghurst where he allegedly assaulted officers, one of whom was left with a broken jaw.

A sketch of Luke Martin in Central Local Court. ( Vincent de Gouw )

He will face court again in June.

Martin has been playing for the Brisbane Spartans in the Southern Districts Basketball League but has been stood down as a result of the incident.

Spartans coach CJ Bruton said he was aware that Martin was dealing with some personal issues, and hoped his love for basketball would be of some benefit.

Bruton said the turn of events had come as a shock.

Martin played as a point guard for the Kings for three seasons from 2010 and also played for the Australian national team in 2004 and 2005. He also played professionally in New Zealand.