From The Chronicle’s Henry K. Lee:

A tentative Monday court date for 49ers defensive lineman Ray McDonald, which was scheduled after his domestic violence arrest, has been canceled because the case remains under investigation by San Jose police, officials said Friday.

McDonald, 30, was arrested about 2:45 a.m. Aug. 31 for allegedly causing “visible injuries” to his fiancee at his home on the 2500 block of Bentley Ridge Drive in San Jose. He was later released from jail on $25,000 bond and had been given a court date Monday.

But Santa Clara County prosecutors, who must decide whether to charge McDonald, have yet to receive documents about the case from police, and so a new court date will be scheduled for McDonald to appear.

After being released from jail, McDonald told television reporters, “I can’t say too much, not right now, but the truth will come out. Everybody knows the kind of person that I am. I’m a good-hearted person.”

McDonald was arrested in 2010 on suspicion of drunken driving in San Mateo County, and again in 2012 on an outstanding warrant from that arrest.

He is a key part of a 49ers defense that includes All-Pro linebacker Aldon Smith, who is serving a nine-game suspension for violating the NFL’s personal conduct policy and substance abuse policies.

Neither the 49ers nor the NFL have suspended McDonald, with Niners coach Jim Harbaugh and league commissioner Roger Goodell saying they would let the criminal investigation play out.