PEOPLE who contacted police about the murder of international student Zhang "Tina" Yu are being urged to call again.

Police received calls from concerned members of the public on Monday evening, which led to the arrests.

Detectives believe these people could still have information vital to the investigation of the murder.

The plea for information came as the University of Tasmania considers holding a memorial for the 26-year-old Chinese student whose body was found in the Tyenna River near Mt Field National Park on Tuesday, five days after she disappeared.

In other developments yesterday, the Mental Health Council of Tasmania announced it would meet to decide the future of board member John Edward Mollineaux, one of four charged in connection with Ms Yu's death.

Mr Mollineaux, 43, from New Town, lives next door to the New Town Rd unit at the centre of the investigation, and appeared in the Hobart Magistrates Court on Tuesday charged with failing to report her killing to police.

Mental Health Council executive Michelle Swallow said Mr Mollineaux was a board member representing Eureka Clubhouse, a community centre for people with mental illness.

She said the board had the power to dismiss individual members and intended to contact Mr Mollineaux yesterday to discuss his future.

"When anybody on the board is charged with a criminal offence they are innocent until proven guilty," she said.

Mr Mollineaux has been bailed to reappear in court this month, with 21-year-olds Stavros Papadopoulos, of New Town Rd, New Town, and Daniel Joseph Williams, of Channel Highway, Kingston, who have been charged with murder.

Jazmin Iris Haygarth, 18, of New Town Rd, New Town -- the partner of Papadopoulos -- has been charged with failing to report the killing and was granted bail.

All four were charged on Tuesday after Ms Yu's body was found at 5am.

Hobart CIB Inspector Peter Powell said several people phoned police with information relevant to the investigation but did not leave contact details.

He said detectives were keen for these people to contact them again.

Detectives want to hear from anyone who may have heard a disturbance at a unit block at 103 New Town Rd, New Town.

Anyone with information can call the police hotline on 6230 2111.

University of Tasmania acting Vice-Chancellor David Rich said it had been suggested a scholarship be named in her honour.

Prof Rich is standing in for Vice-Chancellor Daryl Le Grew, who is in China attending graduation ceremonies for Chinese students.

Ms Yu's parents are believed to be on their way to Tasmania from China.