We report the detection of massive star formation along a bar in the peculi
ar starburst galaxy Mkn 439. We present optical B, R and H alpha+[NII] emis
sion line images as well as H band images to show that the signature of the
bar becomes progressively weak at longer wavelengths. Moreover, this bar i
s misaligned with the main body of the galaxy. The peak H alpha emission do
es not coincide with the bluest regions seen in the colour maps. We infer t
hat the starburst is young since the stars in the burst have not started in
fluencing the light in the near infrared. There are indications of dust in
the inner regions of this galaxy.