Got error -1 when reading table (no replies)

Good morning,

I recently found the following errors on an InnoDB table:

150804 9:52:36 [ERROR] Got error -1 when reading table './xxxx/yyyy'
150804 9:52:46 [ERROR] Got error -1 when reading table './xxxx/yyyy'
150804 9:52:47 [ERROR] Got error -1 when reading table './xxxx/yyyy'

At the time this error occurred we had a locking issue on what seemed to be a single record within the table, for roughly 90 seconds.

I've googled the error but cannot find any information on error code -1.

Can anyone tell me what the error means and how to avoid/correct it?
It has not occurred since and I've only seen it a few times previously.


Thank you