Barely 40 days after signing a return to work formula, lecturers have issued a 15-day strike notice over delayed salaries.

According to the University Academic Staff Union (UASU), the government has failed to honour an agreement signed on November 23 last year.

The agreement ended a 24-day strike that disrupted all 35 public universities and two constituent colleges nationwide.

According to UASU Organising Secretary, Onesmus Maluki, the government agreed to a pay rise for lecturers that would be backdated from October.