LAGOS, Nigeria (AP) — The president of Nigeria for weeks refused international help to search for more than 300 girls abducted from a school by Islamic extremists, one in a series of missteps that have led to growing international outrage against the government.

The United Kingdom, Nigeria’s former colonizer, first said it was ready to help in a news release the day after the mass abduction on April 15, and made a formal offer of assistance on April 18, according to the British Foreign Office. And the U.S. has said its embassy and staff agencies offered help and were in touch with Nigeria “from day one” of the crisis, according to Secretary of State John Kerry.

Yet it was only on Tuesday and Wednesday, almost a month later, that President Goodluck Jonathan accepted help from the United States, Britain, France and China.

The delay underlines what has been a major problem in the attempt to find the girls: an apparent lack of urgency on the part of the government and military, for reasons that include a reluctance to bring in outsiders as well as possible infiltration by the extremists.

Jonathan has acknowledged that his government might be penetrated by insurgents from Boko Haram, the extremist group that kidnapped the girls.

Last year, he said he suspected Boko Haram terrorists might be in the executive, legislative and judiciary arms of government along with the police and armed forces.

The waiting has left parents in agony, especially since they fear some of their daughters have been forced into marriage with their abductors for a nominal bride price of $12. Boko Haram leader Abubakar Shekau called the girls slaves in a video this week and vowed to sell them.