UCCF, the body which supports Christian Unions at universities and colleges across the UK, says its suspended two senior members of staff and commenced a formal investigation into "various allegations".
It's unclear what accusations have been made against national director Richard Cunningham and field director Tim Rudge, though they do not relate to matters of sexual misconduct.
The trustees of the charity say they are seeking experts in employment and workplace practices to run the investigation.
In a statement, they said: "On 22nd December 2022 the Trust Board of UCCF took the decision to commence a formal investigation into various allegations.
"After careful consideration the board concluded it was appropriate and would assist with the integrity of the investigation to suspend two staff members, Richard Cunningham and Tim Rudge, whilst a formal independent investigation is undertaken to establish the facts.
"Our intention is to appoint legal counsel with expertise in employment and workplace practices to run the investigation. For the avoidance of doubt the allegations do not relate to matters of sexual misconduct.
"Suspension is a normal practice in such circumstances and is not any indication of guilt. It is an important and biblical principle not to prejudge the outcome of any process.
"We will provide a further update once the investigator is appointed and the remit has been formalised. Details of the scope and how the investigation will be run will be provided at that time.
"Please keep the ministry and staff of UCCF in your prayers at this time."
UCCF looks to support students in mission. It's help sees 40,000 young adults attend evangelistic events on campuses every year. Since 1990 over 1 million gospels have been given out by students. UCCF says hundreds of people are coming to faith each year thanks to Christian Unions.