Police : This was the first part of a wider effort to beef up security around Abuja . 52 others injured , witnesses say . Security : Authorities stepped up security , surveillance around Abuja after blast . The explosion happened around 4 pm at International Plaza in Abuja 's Wuse II business district .
Police : 52 others injured , witnesses say . Security : Authorities stepped up security , surveillance around Abuja after blast . The explosion happened around 4 pm at International Plaza in Abuja 's Wuse II business district .